Specification for
Com’X200 Data Logger

The Com’X200 Data Logger collects, stores and provides web access
to environmental readings and WAGES measurements for commercial
buildings.

July 2013

Table of Contents

1. Introduction 3

2. Standards 3

3. Operating environment 3

4. Power supply 3

5. Data logger communications interface 3

5.1. Inputs 3

5.2. Power supply output 4

5.3. Ethernet port 4

5.4. Modbus port 4

5.5. Wi-Fi 4

6. Data logger communications interface 4

7. Data logger software configuration 5

8. Data acquisition and export 5

9. Troubleshooting 5

10. Solution and services enabler 5

Introduction

A data logger collects and stores WAGES (water, air, gas, electricity, steam) consumption readings and environmental parameters, such as temperature, humidity, and CO₂ levels, in a commercial building. Data is periodically transmitted as a report to an Internet database server.

Once received by the server, the data is ready to be processed and displayed as web pages for investors or occupants of the building.

Standards

The data logger shall comply with the following standards:

1. Radio communication / telecom & electromagnetic compatibility:

• North America: FCC Class B

• GPRS: RTTE, GCF, PTCRB, IC Canada, Atick, E-Marking, Anatel

• IEC: IEC61000-6-3, EN 55022, EN55011 EN301-489-1/-7 (Class B)

  1. Safety:

• IEC: IEC 60950 (OVC III, Pollution degree class 3)

• North America: UL/cULus 508

• Australia/New Zealand: AS/NZS60950

Operating environment

The data logger shall be able to operate in the -25°C to + 60°C temperature range.

The data logger is rated IP20 & IP40 (front panel).

Power supply

The data logger shall be able to operate using wide range power supplies:

• 100 to 230 V AC (+/-15%)

• 24 V DC (+/-10%)

It shall offer 2 independent ports (so that DC power can be used as the AC power backup).

The data logger can be supplied by power over Ethernet (POE Class 3, IEEE 802.3 af) at 15 watts.

Data logger communications interface

Inputs

The data logger shall have at least six IEC62053-31 Class A-compatible digital inputs, with LED indication of status and pulse reception. The digital input shall be supplied directly from the data logger (see power supply output section below) or from a 10 to 30 V DC external power supply. The maximum pulse frequency is 25Hz.

The data logger shall have at least two analog inputs supporting the following devices:

• RTD probes

• 0-10V sensors

• 4-20 MA sensors

Measurement accuracy shall be 1% for RTD probes and 0.5% for 0-10V and 4-20 MA sensors.

Power supply output

The data logger shall have:

• one 12V DC (+/-10%) power supply output available for pulse metering contact or status reading

• one 24V DC (+/-10%) power supply available for sensors (analog input)

Ethernet port

The data logger shall have two Ethernet ports, which can be used either as a switch or separated ports (one IP address for each). Ethernet port shall be configurable as DHCP client or DHCP server.

Modbus port

The data logger shall have one Modbus serial line port, with two different types of connectors:

• 4-pin screw connector

• RJ45

Wi-Fi

The data logger shall support two Wi-Fi modes:

• Connected to a LAN infrastructure

• As an access point without any Wi-Fi infrastructure

Data logger communications interface

The data logger box shall be compatible with a type 'O' DIN rail. Its size on the DIN rail shall not be greater than 144 mm.

The data logger shall be easy to connect: The ports shall be equipped by using removable screw connectors.

The Wi-Fi and GPRS modules shall be easily installed or removed after wiring of the box. Installation of these modules shall not require additional wires or tools. It shall not require contact with the active part of a printed circuit board.

For Wi-Fi and GPRS modules, an LED shall indicate on the front face the following information:

• The presence of the module

• The status of the connection to the network

• The signal level of the network

Digital and analog inputs shall have customizable labels on the data logger housing.

Data logger software configuration

The data logger settings shall be accessible through web pages.

The data logger shall be equipped by DPWS (Device Profile for Web Services) technology (available on Windows operating systems starting with Vista) with two specific web services: discovery and identification.

The data logger access to login page shall operate using HTTPS protocol.

The user password shall be stored encrypted.

Data acquisition and export

The data logger logging interval shall be configurable from 1 to 60 minutes.

It shall be possible to define a different logging interval for each of six different device types: water, air, gas, electricity, steam, or environmental values.

The data logger shall be able to calculate the cumulated ON time of any digital input.

The data logger shall be able to export logged data in CSV file format.

The data logger is able to manage data export with a proxy server.

Troubleshooting

The data logger shall have a power LED troubleshooting indicator to show:

• Failure mode

• Firmware updating issue

Solution and services enabler

The data logger can act as a solution and service enabler, from a remote energy management system, either within the building or located outside of the building.

The data logger shall enable encryption of data using the SSL protocol.

The data logger shall enable remote and automatic firmware upgrades & configuration without disturbing data acquisition.

The data logger shall detect and report the following:

• Device communication loss

• CPU overuse

• Memory overuse

• Weak GPRS signal

• Reboot

The manufacturer shall propose (by default) the management of the GPRS telecom contract, including a delivery of the GPRS modem with SIM card.