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AC31

Training

ABB

Automation

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Schedule

- 1 - Installation

- 3 - Language

- 2 - AC31 addressing

- 4 - Slave central unit

- 7 - Configuration
- 8 - Diagnosis
- 9 - Communication

- 5 - Analog

- 11 - TC50

- 6 - 07CR42 & 07CT42

- 10 - Coupler 07KP53

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- 1 -

Installation

ABB

Automation

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40 and 50 series central units

Central

Unit 40



07KR51 / 07KT51: 50 series

central units d

ecentralized with

CS31 bus



07CT41/ 07CR41

Standalone



8 opto-isolated inputs 24Vdc type PNP or NPN



6 relay outputs 250V a.c. / 2A

or 6 transistor outputs :



2 outputs 24 VDC, 1A



4 outputs 24 VDC , 0.5 A

Central

Unit 50



Power supplies available: 24 VDC, 120/230VAC

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40 and 50 series central units

Removable

wiring cover,

Wiring diagrams printed

on product

Connector

for

extension

Serial

communication to

PC and MODBUS

network

2 adjustable

potentiometers

for

timer,

temperature...

Direct earthling

via DIN rail or

fixing screw

Better EMC

Removable

connectors :

Cage Clamp or

dual (option)

CS31 bus or

Modbus network

RS485

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40 and 50 series central units

Positive logical inputs PNP
with 120/230 V a.c. or 24 V
d.c.

Negative logical inputs NPN
with 120/230 V a.c. or 24 V d.c.

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40 and 50 series central units

Relay outputs

Transistor outputs

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40 series - standalone central units



A big one for small applications

(typical up to 110 I/O)



34 Kbytes FlashEprom memory ie typical 8000

instructions



0,4 ms cycle time for 1 kbyte binary



Encoder Input 7Khz or 2 high

speed counters 5Khz



1 impulse output



PI and PID regulation



Password



Unlimited timers and counters



Incorporated battery for data

back-up

Central

Unit 40



H

High performance through hard- and

software



Subprogramming (12)



2 interrupts



Direct access to I/O



2 cyclic tasks



Real Time Clock



Communication



ASCII and Modbus

(RS232)

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50 series - Decentralized central units



Powerful modular conception



Same characteristics than 40 series central

units



34 Kbytes FlashEprom memory ie typical

8000 instructions



0,4 ms cycle time for 1 kbyte binary

Central

Unit 50



Additional features



Automatic

switchable

RS485/232 serial communication



CS31 twisted-pair for extensions up to 2000 meters with

3 bus repeaters



CS31 bus switched in MODBUS master or slave



Max 920 Binary Inputs and 494 Outputs / 258 AI or 120

AO

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Inputs/outputs remote units



ICMK 14F1 & ICMK

14N1



CS31 twisted-pair remote

unit



8 opto-isolated inputs

24Vdc
type PNP or NPN



6 relay outputs 250V a.c. /

2A
or 6 transistor outputs :

2 outputs 24 VDC, 1A
4 outputs 24 VDC , 0.5 A

Accepts 6 I/O extension
units

analog

(max. 2)

or binary

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Binary extensions



XI16E1 : - 16 opto-isolated inputs 24VDC

- Type PNP.



XO08R1 : - 8 outputs relay 250A / 2A

- 2 independent commons



XC08L1 : - 8 user configurable channels

- Inputs / outputs 24VDC,0.5A



XK08F1 : - 4 inputs 24VDC type PNP/NPN

- 4 outputs relay



XO16N1 : - 16 outputs transistors

24VDC

/ 0.5A

- 1 independent commons

All binary extensions have self-

configuration

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Binary extensions

XI16E1

XO08R1

XC08L1

XK08F1

XO16N1

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Binary extensions



XO08Y1 :

- 8 Transistor outputs

24VDC / 2A

- 1 independent common



XO08R2 : - 4 Relay outputs NO 250V / 2A

- 4 Relay outputs NO/NC 250V /

3A
- 8 independent commons

All binary extensions have self-

configuration

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Binary extensions

XO08Y1

XO08R2

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A CS31 bus is a RS485 serial interface

•

A shield twisted pair RS485

(the twisted pair has to be

symmetric )

• Master/Slave protocol:

1 master central unit on the

bus

It can manage up to 31 connection

points

• Maximal length

:

500 m without amplifier

2000 m with 3 amplifiers (NCBR or

NCB)

CS31 Bus

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• Bus interruptions should be avoided, during

cabinet cable connections for

instance,otherwise it should be cabled to the

same side of the terminal block

• A same cable type should be used for the

whole system bus

CS31 Bus

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• Warning:

Star connection of the bus is

Forbidden

Allowed
wiring

Forbidden
wiring

• The bus should be terminated with a 120  1/4

W resistance connected to the bus extremities

CS31 Bus

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• In case of noisy elements in the area of

the cabinet, connect the bus shield to the
ground via a capacitor 1 nF class Y directly
at the access of the cabinet.

CS31 Bus

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• Same earth for all AC31 products :

Connection

as short as possible.

When the remote units are

outside the cabinet, they must be connected to
the nearest earth.

Earthing principles

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• In case of noisy element, the connection to the

earth has to be near the noisy element

Earthing principles

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- 2 -

AC31

Addressing

ABB

Automation

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I Binary input

IW Analog input

O Binary output

OW Analog output

Channe

l

number

Addres

s

unit

%IW

0 0

0
0

.

x

x

x

x

Addressing inputs/outputs

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• Standalone or master mode + 6
analog or binary extensions

62

for central unit and

63 to 68

for

extensions

Addressing Central units

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On the master central

unit

Automatically

Address is 62

On the

extensions

Assigned

automatically

Addresses are 63 to

68

How ?

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n° 62

62+1

+

1

+

1

+

1

+

1

+

1

Example: 62

63 64 65 66 65

66

I&O I&O

O

I

I

O

On central
unit:

Automatically, it depends of the type , the

situation :
Mixed or configurable I&O, input I,

output O.

Addressing binary extensions

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62

Ana

I&O

Ana

I&O

Ana.

I&O

Bin.

I&O

Ana.

I&O

Binaire
I&O

6
3

6
4

6
5

6
6

6
3

6
4

+

1

+

1

+

1

+

1

+

1

On central
unit:

Automatically, addresses 63

to 68

Addressing analog extensions

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The CS31 protocol is a master/slave
protocol :

•

The slaves are indicated by an address

between 0 to 61

- The addressing is not according to the order of the units

on the bus

- The addresses from 0 to 61 may be attributed in any

order to the

slaves.

• The master CPU can manage up to 31

connection points

- Example of connection point:

A non extensible remote unit
An extensible remote unit with binary extensions
A central unit ( 50 serie with extensions, 90 or 30

series )

A variable speed drive ABB NCSA-01 interface…...

-

Warning :

An extensible remote unit with analog

extensions counts

2 connection points.

Addressing on CS31 bus

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Master
CPU

Extensible remote

units

+ extensions

or

Slave central units

Addresses

00 to 61

Authorized Addresses on C31 bus

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On the extensible remote

units

By rotative switches

For tens

For

units

How ?

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Addressing binary extensions

Master

CPU

n° X

X+1

+

1

+

1

+

1

+

1

+

1

Example: 10

11

12 13 14

13 14

I&O I&O

O

I

I

O

Extensibl
e

remote
unit

CS31
bus

On extensible
unit:

Automatically, it depends of the type ,

the situation :Mixed or configurable I&O,

input I, output O.

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it takes the same address

value as that of the

extensible remote unit

Max : 8 analog input channels and
8 analog output channels

extensions

On extensible remote
unit:

Extensibl
e

remote
unit

Master

CPU

n° X

X

IW xx ,00 to IW xx ,

07

OW xx,00 to OW xx ,

07

CS31
bus

Addressing analog extensions

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IW xx ,04 to IW xx ,

07

OW xx,04 to OW xx ,

05

Addressing analog extensions

Max : 2

analog

extensions

n° X

X

X

IW xx ,00 to IW xx ,

03

OW xx,00 to OW xx ,

01

CS31
bus

Extensibl
e

remote
unit

Master

CPU

On extensible remote

unit:

-XM06B5-

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Example



Elements :



Number of binary inputs :



Number of binary outputs :



Number of analog inputs :



Number of analog outputs :



Products used : KR51 (8I/6O), XI16 (16I), XO08
(8O),

ICMK (8I/6O), XM06 (4AI/2AO)



To find :



Number of products of each categories



Realise the configuration



Addressing

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- 3 -

Language

ABB

Automation

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 The variables used by AC 31 are of
different types:



Word Bit variables

( status 0 or 1 )



Variables

( range -32768 to 32767 )



D

ouble word variables

(range -2147483648 to

2147483647 )



Texts

( ASCII characters )

List of variables

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Type Inputs , I

•

Inputs of the remote units on the

CS 31 bus

I00.00 to I61.15

•

Inputs of the central unit

I62.00 to I62.07

•

Extension inputs on a central unit

I63.00 to I68.15

Binary variables

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Type outputs , O

•

Outputs of the remote units on the

CS 31 bus

O00.00 to O61.15

•

Outputs of the central unit

O62.00 to O62.05

•

Extension outputs on a central unit

O63.00 to O68.15

Binary variables

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Type M , S et K

• M

internal bits

M000.00 to M099.15

M230.00 to

M254.15

• S Chain steps

S000,00 to

S125.15

• K

bit constants

K00.00 and

K00.01

Internal bit variables

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•

Oscillator bits

M 255.00

2Hz

period

500ms

M 255.01

1Hz

period 1 s

M 255.02

0,5Hz

period

2 s

M 255.03

0,0166Hz period 1

min

•

Status bits

M 255.06

Switch MODBUS / Active Mode for

COM2

M 255.07

Watchdog MODBUS COM2

M 255.08

Watchdog MODBUS COM1

M 255.09

Switch MODBUS / Active Mode for

COM1

•

Diagnosis bits

M 255.10 to M255.14

Special internal bit variables

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Type MW et KW

• MW Internal words (16
bits)

• MW000.00 to MW099.15
• MW230.00 to MW253.15

• KW Word constants (16
bits)

• KW01.00 to KW31.15

Internal word variables

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• Clock variables

IW62.08 to

IW62.14

•

Information word

IW62.15

• Potentiometers

IW62.00 and

IW62.01

•

Diagnosis words

MW254.00 to

MW255.15

•

Analogic Input

(CR42) IW62.03 to

IW62.05

•

Analogic Input

(CS31)

IW00.00 to

IW61.15

Special word variables

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Type MD et KD

• MD Internal double word (32
bits)

•MD 00.00 to MD 07.15

• KD Word constants (32 bits)

• KD 00.01 to KD 07.15
• KD 00.00 System constant for cycle
time

Double word variables

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Type # xxxx and #H

• #xxxx

• Direct value ( for example #123 )

• #H

• Hexadecimal direct value ( #H 0000….#H
FFFF )

Constants

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Insert
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here

- 4 -

Slave

central unit

ABB

Automation

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Six analog or binary extensions are possible

and they are only managed by slave central

unit

0 to 61

for slave number central unit

63 to 68

for extensions, addresses

managed by

the slave CPU

Programming addressing for slave central

unit:

%I62.XX and %O62.XX

Slave central unit on CS31 bus

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Slave central unit communicates with

Master central unit by I/O’s or function

blocks

Master

Cpu +

extensio

ns

62

0 < X < 61

Slave

Cpu +

extensio

ns

Remote

unit +

extension

s

Addressing slave central unit

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Configure 3 parameters :

• Slave number
•Type and number of data
receiving

•Type and number of data
transmitting

Addressing slave central unit on CS31

bus

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Slave number

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Type of number of date exchange

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The Max number for a bit

configuration is 120 inputs

and 120 outputs

IW xx, 00 to IW xx ,07

and OW xx, 00 to OW xx,

07

I xx , 00 to I xx+7,15

and O xx , 00 to O xx+7 ,

15

The Max number for a

analog configuration is 8

word inputs and 8 words

outputs

Limits of communication

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The authorized CS31 addresses

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Data exchange can be carried in
two ways:

• Directly through the
inputs/outputs

• By using function blocks

Programming

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The

Max

number

for

a

bit

configuration is 120 inputs and 120
outputs

The Max number for a analog
configuration is 8 word inputs and
8 words outputs

Two configuration are
possible :

• Bit
transmission:

• Transmission by
word:

Directly through the I/O’s

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MT_CS31 (data transmission to the
slave)

MR_CS31 (data reception from the
slave)

Four function blocks are
required

• For the
master:

By using functions blocks

• For the
slave:

ST_CS31 (data transmission to the
master)

SR_CS31 (data reception from the
master)

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Data transfer from master to slave

MT_CS31

START

SLAV

W_NB

T_NB

AD

S_OK

END

SR_CS31

W_NB

AD

S_OK

END

MASTER

SLAVE

RECEPTION

TRANSMISSIO
N

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MR_CS31

SLAV

W_NB

AD

M_OK

END

ST_CS31

START

W_NB

T_NB

AD

M_OK

END

Data transfer from slave to master

MASTER

SLAVE

RECEPTION

TRANSMISSIO
N

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DATA

OWxx.07
OWxx.01

DATA

IW00.07
IW00.01

SR_CS31

MT_CS31

OWxx.00

IWxx.07

IW00.00

OW00.07

Handshake

Data transfer from master to slave

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Insert
image
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- 5 -

Analog

ABB

Automation

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Manual channel selection



XM 06B5 (12 bits resolution)



4 analog Inputs :



Type : configurable channel / channel



-10V/+10V, 0/20mA, 4-20mA



Pt100 - Pt1000 - NI1000 - Balco500



Integrated filter (DT1, 50Hz or 60Hz)



Dual connectors as an option



2 analog outputs :



Type : configurable channel / channel



-10V/+10V, 0/20mA, 4-20mA

Scalable process value on
display

Free channels can be used

for other values

Analog inputs / Outputs extensions



XE 08B5 (12 bits resolutions)



8 analog inputs (same characteristics than XM06B5)



XTC 08



8 values display

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

Cabling of channels:

Voltage / current

PT100/PT1000/NI1000/BALC

O500



Configuration of channels:

Switches & push button
Software

Installation of the analog extensions

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Display of the analog value

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Voltage / current

XE 08 B5 with 2 wires
probe

XM 06 B5 with 2 wires
probe

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PT 100 / PT 1000

XE 08 B5 with 3 wires
probe

XM 06 B5 with 3 wires
probe

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Configuration : Dipswitches

Dip switches
configuration on XM
06 B5

Dip switches
configuration on XE
08 B5

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Dip switch N°1 for input 0

OFF voltage or

Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°2 for input 1

OFF voltage or

Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°3 for input 2

OFF voltage or

Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°4 for input 3

OFF voltage or

Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°5

OFF current source is set to 0.25mA for

Pt1000/Ni1000/Balco500

ON current source is set to 2.5mA for Pt100

(Used for channels 0 to 3)

Configuration : Dipswitches

Description of the Dip-Switches common for XM06B5 /

XE08B5

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Dip switch N°7 for input 4

OFF voltage or Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°8 for input 5

OFF voltage or Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°9 for input 6

OFF voltage or Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°10 for input 7

OFF voltage or Pt100/Pt1000/Ni1000/Balco500

ON current

Dip switch N°6

OFF current source is set to 0.25mA for

Pt1000/Ni1000/Balco500

ON current source is set to 2.5mA for Pt100

(Used for channels 4 to 7)

Configuration : Dipswitches

Description of the Dip-Switches only for XE08B5

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Configuration : Push button

The push button on the front plate

allows

:

•Selected the channel to display the value.
•Configured the format of channel selected.
•The display is tested (all segments ON)

after each revolution without 50 or 60 Hz
filtering

•For XM06B5 extension:

The 4 analog inputs have the

number

channels 0 up to 3

The 2 analog outputs have the

number

channels 4 and 5

•For XE08B5 extension:

The 8 analog inputs have the

number

channels 0 up to 7

60 H

50 H

FASt

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Configuration : Format channels

10V

0-20

4-20

100

1000

1.0.0.
1.0.0.

0.

n I

500

Voltage configuration
The minimum displayed value is 0.01V

0-20 mA configuration
The minimum displayed value is 0.01mA

4-20 mA configuration
The minimum displayed value is 0.01mA

Pt100 configuration
The minimum displayed value is 0.1°C

Pt1000 configuration
The minimum displayed value is 0.1°C

Pt100 3 wires configuration
The minimum displayed value is 0.1°C

Pt1000 3 wires configuration
The minimum displayed value is 0.1°C

NI1000 configuration
The minimum displayed value is 0.1°C

Balco500 configuration
The minimum displayed value is 0.1°C

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Configuration : Software

In the user program, it is possible to configure
one channel with the functions blocks
CONFIO1

• The type ( voltage, current or
Pt100/Pt1000/Ni1000/Balco500 )

• The filtering time
• The scale of the display value
• Lock or unlock the configuration for all channels

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Configuration : Software ( CONFIO1 )

Valid on the rising edge 01
Analog channel ( i.e. IW63.01
)

Type of format
( 0,1,2,3,4……)

Position of the dot on the
display

Value of the Offset

Value of the multiplication
(scale)

Filtering time

Input parameters:

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Configuration : Software ( CONFIO1 )

Bit RDY is set to 0 during the function
processing

Bit ERR is set to 1 during one cycle
(bit RDY is set to 1 in the same time)

An error is detected if

:

one parameter value is wrong

analog channel doesn’t exist

communication problem

Output
parameters:

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Configuration : Software

(CONFIO4,CONFIO8 )

In the user program, it is possible to configure 4 or
8 channels with the functions blocks
CONFIO4,CONFIO8

• Same possibilities as the CONFIO1 function
block

• The 4 or 8 channels can be located on
different extensions

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Insert
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here

- 6 -

Central units

07CR42 &

07CT42

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Description

Programming mode

or Modbus

Master/Slave RS232

connection

2 Analog inputs +/-

2 Analog inputs +/-

10V

10V

1 temperature

1 temperature

measurement

measurement

(Pt100, Pt1000 or PTC)

(Pt100, Pt1000 or PTC)

Connection

with

extensions

8 binary

inputs

6 binary outputs

(relay or

transistor)

Connection

with 07KP53

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Characteristics



Same Characteristics than 40 series

central units



Additional features:

3 Analog inputs

IW62.02 & IW62.03

voltage format

+/-

10V

IW62.04

temperature format (Pt100, Pt1000,

PTC….)

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Cabling and addressing

Example :

connection on

07CR42 120/230 V
a.c.

0V 2 3 4

ANALOG INPUT

POWER RUN ERR

IW62.04

IW62.03

IW62.02

Assignment of the
3 analog inputs

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Voltage format



Without user configuration



Measuring ranges ±10 V 11 bits resolution

plus sign.



Fast reading with fix frequency,

independently of the cycle time, around 2.5

ms

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Temperature format



The analog input IW62.04 can be used with

all universal temperature sensors like PT100,

PT1000, PTC or others….



The complete table of corresponding

resistance / analog value can be found in §

annexes.

Table Resistance 10

 < R < 5M 



The configuration will be performed by FKG

function block, this function allows to define a

polygon by n points ( X0 / YO… Xn-1 / Yn-1 )

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Example with Pt100 format

The measuring range for PT100 is 12 bits, the value range: (-100.3 to
+524.4 ° C)
range overflow / open-circuit: : +32688,
range underflow / short-circuit of the sensor : 0

FKG

x

XC/Y C

y

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

XC/Y C

%IW62.04

TEMP_P T100

VALUE_2368

VALUE_3256

VALUE_3792

VALUE_4448

VALUE_4912

VALUE_5544

VALUE_6312

VALUE_6912

VALUE_7528

VALUE_7916

VALUE_MINUS1003

VALUE_MINUS381

VALUE_26

VALUE_542

VALUE_935

VALUE_1492

VALUE_2223

VALUE_2832

VALUE_3510

VALUE_4028

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Example with PTC Thermistor

•

Possibility to use another temperature sensors like PTC,

NTC… The configuration will be performed also by FKG
function block, the parameters can be found according to
the characteristics temperature sensor type used

• Example with PTC thermistor, thermal machine
protection, use to protect electric motors from over
temperature. The resistance / temperature characteristics
of PTC thermistor is defined by the following limits,

10

-20K –5K 0 +5K +15K

°C

R ( O )

10

2

10

3

10

4

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- 7 -

Configuratio

n

ABB

Automation

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There are two configuration tools :

• Central unit parameters :

With the configuration

menu in

AC31GRAF

Software

• Analog

Extensions :

With the CONFIO

function

block and push

button

• Remote unit parameters :

With the CS31CO

function block

to

configure certain remote units

Configuration

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For 40 series central units

Configuration central units

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For 50 series central units

Configuration central units

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With CS31CO function block

The possible configurations, depending on the units :

• Configuration for detecting a cut wire an input or
binary output

• Configuration for configurable input/output units

• Configuration of analog inputs/outputs as power or
voltage

• Configuration of the filtering time of a binary input

Configuration remote units

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A clock is available on the 40 & 50 series

CPU

The clock parameters are accessible :

• Either in the clock variables:

IW62.08 to IW62.14

• Or by using the UHR function Block

Configuration : Clock

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The clock update can be effectuated in two ways :

• Through the AC31GRAF
Software in the
configuration window

• Through
programming using
the UHR function
block

UHR

FREI

S

SEC

MIN

H

TAG

MON

J HR

WTG

AKT

FEHL

ASEC

AMIN

AH

ATAG

AMON

AJ HR

AWTG

%I62.00

%KW001.00
%KW001.01
%KW001.02
%KW001.03
%KW001.04
%KW001.05
%KW001.06

%M001.00

%MW000.00
%MW000.01
%MW000.02
%MW000.03
%MW000.04
%MW000.05
%MW000.06

%I62.01

%MW001.00

Configuration : Clock

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The password can be defined to deny central

unit write access to unauthorised persons :

• The password is given
by AC31GRAF Software in
the configuration window

• Password composed of
4 hexadecimal values
( 0 to F )

Configuration : Password

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- 8 -

Diagnosis

ABB

Automation

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4 error classes

:

•Class 1 errors :

Fatal errors

•Class 2 errors :

Serious

errors

•Class 3 errors :

Light

errors

•Class 4 errors :

Warning

errors

Type of errors detected

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Class 1 errors:
fatal errors

Class 2 errors:
serious errors

Class 3 errors:
light errors

Class 4 errors:
warnings

Access to the Flash EPROM
is no longer assured.
- Flash EPROM checksum
error

The operating system
functions correctly but the
execution of the user program
is not guaranteed.
Detected errors:
- Defective RAM
- Too many timers active
simultaneously

Communication errors.
Stopping the program
depends on the users choice
during configuration
according to the application.
Detected errors:
- Disconnected unit
- Bus error
- NCB / NCBR error
- Cycle time too short
- Addressing fault

Errors occurring on the units
or syntax errors whose
effects will only become
apparent later. The user
decides which actions to
initialize according to the
application.
- Internal unit error
- Cut wire

*1

overload, short-

circuit
- Analog output level error
- Defective 10V output
- Program size, program
syntax, sub-program or
interruption program error
- Too many historical values
- All of the units on the bus
are not initialized

*2

*1 error detected if prior configuration by programming with the CS31CO block

*2 error detected if prior software configuration with the "PLC configuration" menu of the Control window.

Details of errors detected :

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•

With AC31GRAF

software

• By led status

• In the User
program

How to detect an error ?

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The detected errors are
signaled on the central
unit by a red LED
( ERR )

An error on a remote unit is
also signaled by a red LED of
the unit concerned.
The green LED ( SUPPLY )
blinks on the extension
when an error occurs on the
extension.

Analysis by LED status

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A diagnosis can be obtained in the

“PLC status information”

 

•

The errors are displayed

in text form (one by one )

•

The errors can be

acknowledged
(one by one )

Analysis through AC31GRAF

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The diagnosis words MW254.00 to
MW255.15 and the internal bits M255.10 to
M255.13 can be analysed or used in the user
program.
These words or bits take a different value
according to the error.

Analysis by user program

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• On the products

• In the user program

• Through AC31 GRAF
Software

How to acknowledge an error ?

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In the status window :

• The error can be
up dated by « UP
DATE » button

• The error can be
acknowledged by
«ACKNOWLEDGE »
button

Through Software AC31GRAF

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It is possible to acknowledge an error

when the function block « CS31QU » is

valided

In user program

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By restarting the central

unit and new
initialisation of CS31
bus

By action with test
button on the
remote unit (30
serie)

Only if the errors have been

corrected

Directly on the products

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- 9 -

Communicatio

n

ABB

Automation

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Three communication

protocols

Modbus
mode

ASCII mode

Programming

mode

With 40 & 50 series central units

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Incorporated in the 40 and 50

series central units

Advantages :

- It is known world-wide

- It is easier

- It is powerful

MODBUS protocol

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40 or 50

series

MODBUS protocol
RS232 line

50

series

MODBUS protocol
RS485 line

series

series

50

50

50 series

MODBUS protocol

RS485 line

50 series

50 series

Point to point connection with
a PC

Network connection between
CPUs

Network connection with a PC

Example of configuration :

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Support

RS232, RS485, optic fibers,...

Mode

RS485 half-duplex

Number of connection points

1 single master
max. 1 slave with RS232 interface
max. 31 slaves with RS485 interface
max. 255 slaves with repeaters

Protocol

MODBUS (master / slave)

Transmission control

CRC 16

Speed

up to 19 200 Bauds

Maximum length

on RS485:
1 200 m at 19 200 Bauds
1 500 m at 300 Bauds

Modbus protocol description

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•

Only with the black 07SK51 or

07SK53 cables

• Configure through AC31GRAF

Software
• Configure in user program

P.S.

The serial interface of the 40 and 50 series central

units have a factory setting Modbus configuration :

Mode: Modbus slave 1 unit
transmission speed: 9600 bauds
Number of stop bits: 1 / Number of data

bits : 8

Parity: None

Communication configuration

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Through AC31GRAF Software

How configure the communication ?

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In user program ( With SINIT function

block)

How configure the communication ?

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• Modbus slave central unit

A program isn’t required in central unit

.

• Modbus master central unit

The Modbus function enables sending data

read / write request to Modbus slaves

.

•

List of cross references

An exchange of Modbus data is realised in a

table defined by:
- the Modbus address of the first variable
- the list size = total number of variables in the

list

Modbus programming

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ERROR_CODE

ERROR

READY

%O62.00

6

992

TIME_2S

READ_BITS

SLAVE_1

READY

EADY

MODBUS

FREI

SLAV

FCT

TIME

ADDR

NB

DATA

RDY

ERR

ERN

Example of Modbus function block

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It enables exchanging text coded in ASCII,

between 40, 50 series central units and a

printer or a terminal fitted with an ASCII

interface.

• Using the

black

07SK51 or 07SK53 cable.

• It is necessary to configure the communication
parameters (Speed, Stop bits, data bits, parity,…. )
with the

SINIT

function block in the user program.

• Sending an ASCII message is done with the

SEND

function block in the user program.

• Receiving an ASCII message is done with the

REC

function block in the user program.

ASCII protocol

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This protocol uses the serial interface of the

central unit and is reserved for devices which

dispose of an ABB programming interface

• Using the

grey

07SK50 or 07SK52 cable.

• All variable values can be read or written by this
protocol without any configuration or any particular
program in the central units.

• The communication parameters are :

- 9600 bauds

- 8 data bits

- 1 stop bit

- No parity

Programming protocol

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- 9b -

MODBUS®

Master or

Slave via CS 31

connection

ABB

Automation

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MODBUS mode

CS31 Bus
mode

MODBUS
mode

ASCII
mode

Programming
mode

With 50 series central units

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Examples of configuration :

MODBUS master

RS232

RS485

Converter

RS232/RS485

50
serie

MODBUS slave

50
serie

MODBUS slave

TC50

DRIVE

MODBUS master

MODBUS master

50 serie

50 serie

50 serie

MODBUS Master

MODBUS Slave

MODBUS Slave

MODBUS Master

50 serie

50 serie

MODBUS Slave

MODBUS Slave

TC50
Control panel

MODBUS Master

Network connection between
CPUs

Network connection with a PC

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Protocol description

Support

CS31 Connection

Mode

Half-Duplex

Number of Connection points

1 Slave with RS485 interface

31 Slaves without repeater

255 Slaves with repeater

Protocol

MODBUS Master or Slave

Transmission control

CRC 16

Speed

Up to 115 200 Bauds

Maximum length

On RS485 :
600 m at 76 800 Bauds
1 200 m at 19 200 Bauds

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Connections

BUS2 BUS1 Sh

POWER RUN ERR

Shield

D1 +

D1 -

You can use the 07SK53 cable to

connect the Central unit on the network

RS485

RS485 Network

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Configurations

In the PLC configuration window in

AC31GRAF Software

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- Mode:

Standalone

- Transmission speed :

19 200 Bauds

- Number of stop bits :

1

- Number of data bits :

8

- Parity :

None

Default parameters for the CS31

interface

COM 2

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Configurations

Operative mode parameter

:

Constant system KW00.00: MODBUS



Master

or Slave

Meaning of the value of KW00.00:

KW00.00 = MODBUS



Slave address + 1100

Example

: MODBUS



Slave address N°5

KW00.00 = 5 + 1100 = 1105

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Configurations

Configure the CS31 port parameters by user

program

SINIT

FREI

SSK

BAUD

STOP

ZL

PTY

E/O

ECHO

SBRK

FEND

ENDS

ENDE

TRUE

COM_2

SPEED_BAUDS

ONE_BIT_STOP

DATA_BITS_8

FALSE

FALSE

FALSE

FALSE

FALSE

ENDS

ENDE

Use the

SINIT block

in AC31GRAF Software

SSK parameter

=

COM2

BAUD parameter

=

Speed

9600

write directly

9600

19200

write directly

19200

33600

is written through Code

44

38400

is written through Code

38

57600

is written through Code

25

75000

is written through Code

19

76800

is written through Code

18

115200

is written through Code

12

125000

is written through Code

11

187500

is written through Code

7

375000

is written through Code

3

750000

is written through Code

1

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Default detection

The binary flag M255.07 can be used as a

watch-dog for the MODBUS



Slave on the

CS31 bus

M255.07 flag is set to 1 when

the slave sends answer to the

master

%M255.07

TON

IN

PT

Q

ET

TIME_OUT

VALUE

%M255.07

=R

%M255.07

ALARM

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- 10 -

MODBUS

Coupler

07KP53

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Advantages with coupler solution



Fast response time

Fast response time



High speed communication : up to 115 KBauds



Concentrate data’s inside the coupler, to reduce

the number of cycle time necessary to interrogate
all MODBUS slaves



Increasing communication capacities

Increasing communication capacities



2 additional interfaces



Let the serial line free on CPU, for programming

mode or for ASCII communication (printer, bare
code,modems…)

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Advantages with coupler solution



Easy installation

Easy installation



In slave MODBUS mode, automatic detection of

polarity and speed baud.



Integrated end resistances for impedance

adaptation



New Features and applications

New Features and applications



Possibility to make redundancy of information



Asynchronous Mode



Extend present applications (Minimum 3.0

Version on CPU)

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Characteristics



2 independent

2 independent

MODBUS

MODBUS

communication ports

communication ports



Master or Slave MODBUS mode on

Master or Slave MODBUS mode on

each port

each port



High speed (up to 115200 bauds)

High speed (up to 115200 bauds)



RS485 ( Connectors ) and RS232 ( Min

RS485 ( Connectors ) and RS232 ( Min

DIN8 )

DIN8 )



Synchronous or / and asynchronous

Synchronous or / and asynchronous

mode (possibility to mixed both modes)

mode (possibility to mixed both modes)



Power supply provide by the CPU

Power supply provide by the CPU

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Description

(COM 3)

communicatio

n port

Min-DIN8,

RS232

Dip-switches

(COM 4)

communicatio

n port

Min-DIN8,

RS232

(COM3)

communication

port RS485

connection

(COM4)

communication

port on

RS485 connection

Connection

with the

CPU

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Dip-switches and LED's

The Dip-switches are used to
set the polarity of bus (only
in Master mode) and to
connect an internal
resistance (end of bus =120
).

LED ’s
indication

ERR

TX

RX







COM3

ERR

TX

RX







COM4

SUPPLY



Power
supply

Error on
communication

TX and
RX

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Configurations example

Configuration with

redundancy

Configuration with MODBUS master and slaves

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Synchronous & Asynchronous Mode



Synchronous mode

Synchronous mode



Coupler used as CPU additional com port : one

request on each the cycle time



Asynchronous mode

Asynchronous mode



Coupler concentrate in a table all data from the

interrogated slaves independently from cycle
time, CPU need only a cycle time to get all the
table.

Response time

:

Synchronous communication mode

:

1 cycle automate + 5 character time

+200µs+10µs/word

Asynchronous communication mode

:

5 character time +200µs+10µs/word

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Synchronous mode



Step 1, First cycle time



Step 2, Second cycle time



Step 3, Third cycle time

Example with 16 slaves,
115Kbauds : 916 ms

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Asynchronous mode



Fast request by coupler

(depending on slave
response time)



Data-backup from coupler

to CPU, 1 cycle time

Example with 16 slaves, 115Kbds : 436
ms (time divided by 2, compare to
synchronous mode)

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Asynchronous Ultra fast mode



Fast request by coupler



Data-backup from coupler

to CPU, 1 cycle time



Slave coupler request

Example with 16 slaves, 115Kbds : 219
ms (time divided by 4, compare to
synchronous mode)

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Guide to initialise and communicate



Initialisation :

MODMASKT

coupler

configuration



Table : Master,

speed, time out



Communication :

1 MODMASTK by

Slave

Coupler on

master CPU

Coupler on

Slaves CPU

Asynchronous

Synchronous

Asynchronous

(fast mode)



Initialisation :

MODMASKT

coupler

configuration



Table : Master,

speed, time out,

and request



Communication :

only 1

MODMASTK



Initialisation :

MODMASKT

coupler

configuration



Table : Master,

speed, time out,

and request



Communication :

only 1

MODMASTK



Initialisation :

MODMASKT

coupler

configuration



Table : Slave

number



Initialisation :

MODMASKT

coupler

configuration



Table : Slave

number



Initialisation :

MODMASKT coupler

configuration



Table : Slave

number,

request to

keep data



Communication :

only 1

MODMASTK

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Configuration table



Parameter zone

Parameter zone

Constant 0 = 1100 to 1355 (1100 master, 1101 slave 1, 1102 slave
2…)
Constant 1 = Communication speed (see next slide)
Constant 2 = Set the delay between rising edge of RTS and start of
emission

(used for modems, this counter is managed by unit of

10ms)
Constant 3 = Set timeout communication (in ms)



Request zone

Request zone

Constant 4 = Slave number for the first request (1 to 255)
Constant 5 = MODBUS function
(1,2 : read bits 3,4 : Read words 15,16 : Write words)
Constant 6 = MODBUS address of the data in the slave
Constant 7 = Number of data requested (< 120 words or 1920 bits)

First request

Second request

Constant 8 = Slave number for the 2

nd

request (1 to 255)

Constant 9 = MODBUS function (1, 2, 3, 4, 5, 15, 16)
Constant 10 = MODBUS address of the data in the slave
Constant 11 = Number of data requested (< 120 words or 1920 bits)

…
Repeat the same for the 58 others requests

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Memory limitations



Max number of request :

60 for each com

port



Max size for each request : 120 words.



Max size of result table :

256 words for each

com port

Example of the limits configuration
(supposing equal repartition):

- 60 requests of 4 words each
- 2 requests of 120 words each



COM3 result table can overlap COM4 result table.

Maximum of 512 words : in that case COM4 is used

only with synchronous mode.

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Communication speed

Speed (BAUD)

code

2400

2400

4800

4800

9600

9600

19200

19200

33600

44

38400

38

57600

25

75000

19

76800

18

115200

12



All the communication speed available with

coupler, with the corresponding codes

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Coupler initialisation & communication



Use MODMASTK (AC31GRAF) or

Use MODMASTK (AC31GRAF) or

MODMASTW (907AC1131)

MODMASTW (907AC1131)

function

function

blocks

blocks



Initialisation : MODMASTK or MODMASTW

function blocks are used to initialise the coupler at
first : Initialisation of the communication ports
COM3 and COM4 (master or slave, speed, RTS
signal delay, time out)



Communication : MODMASTK or

MODMASTW function blocks are used to
communicate between the CPU and the coupler
(write or read data).

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Coupler initialisation



Parameter for coupler initialisation

Parameter for coupler initialisation

Activation with a rising edge

Communication port : 3 or 4

256 for COM3, 257 for COM4

MODBUS function write word
(16)

Time out in milliseconds

ADDR : 30000 for COM3, 30244 for COM4

MODBUS address of configuration

Number of word used 1 to 120

1

rst

constant of the configuration

table

MODMASTK function ready

Error with the function

Error number

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Coupler communication



Parameter for communication

Parameter for communication

Communication port : 3 or 4

256 for COM3, 257 for COM4

MODBUS function Read or
Write

Time out in milliseconds

ADDR : 31000 for COM3, 31256 for COM4

MODBUS data address

Number of words used 1 to 120
First variable of data table in
CPU

Activation with a rising edge

MODMASTK function ready

Error with the function

Error number

* If COM4 is used in synchronous mode, the number of
words used for COM3 can be expended to 512.

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- 11 -

TC 50 & TC50-

2

ABB

Automation

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Control panel TC50

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Description

ABB design

External (W x H x D mm) = 166 x 86

x41

Cut-out size (W x H mm) = 157 x 77

Power supply = 24Vdc

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

2 lines of 20 characters



128 pages



8 variables per pages



128 alarm / help texts



5 customisable key functions



IP 65 front unit protection

Characteristics

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How to connect the TC50-1?

RS232

MODBU

S

TC50-1 version
RS232

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How to connect the TC50-1?

RS232

Modbus protocol

With

KT94

TC50-1 version
RS232

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How to connect the TC50-2?

RS485

MODBU

S

TC50-2 version
RS232/RS485

RS232

MODBU

S

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Example of applications TC50-2?

MODBUS

MODBUS

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

Control panel for all CS31 central units
(MODBUS or programming)



Programming software on Windows



Programming software available in 5 languages
(English, French, German, Italian, Spanish)



Texts can also be programmed in 5 languages

Advantages

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

Process control with key function

What can we do with the TC50?

1/

push

2 /

transfer to

CPU which

reacts

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

Process control with key function



Sequences per pages

What can we do with the TC50?

Up
Dow

n

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

Process control with key function



Sequences per pages



Alarms with help messages

What can we do with the TC50?

Help

Alarm

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

Process control with key function



Sequences per pages



Alarms with help messages



Value modifications :

What can we do with the TC50?

1 3

2

1

value setting

2

modification

with up and

down

3

validation

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

With TCWIN (for Windows 95, 98 or NT)

programming softwares

TC50 programming

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

Product package :

TC50 and TC50-2 are delivered with cable
between TC50 and CPU series 40 & 50



Software package :

TCWIN deliver

with programming cable

TC50 package