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About Generic Terms and Abbreyiations

Unless otherwise stated, this textbook uses the following abbreviations and terms for the explanation of MX Component.

Generic term/Abbreviation	Description
PC CPU module	Abbreviation of PC CPU module and IBM PC/AT® compatible personal Computer.
Ethernet module	Generic term ofthe OJ71E71, QJ71E71-B2 and QJ71E71-100.
MELSEC communication protocol (MC protocol)	Name of the communication system for accessing the PLC CPU from extemal devices using the communication procedures for Q series serial communication modules or Ethernet interface modules. (Described as the MC protocol in this textbook) Two types of communication Systems are available; one using ASCII codę data and the other using binary codę data.
OJ71E71	Abbreviation of QJ71E71 type Ethernet interface module.
OJ71E71-B2	Abbreviation of C5J71E71-B2 type Ethernet interface module.
QJ71E71-100	Abbreviation of OJ71E71 -100 type Ethernet interface module.
Extemal device	Generic term for personal computers, computers, workstations (WS) and other Ethernet module, etc. that are connected to Ethernet.
Internet (Internet)	Huge Computer network that connects global networks using the communication protocol TCP/IP. The Internet is a decentralized network without a Computer which Controls the overall network. Also, it is established by allowing the server computers all over the world to interconnect and provide services individually.
Intranet (Intranet)	Intra-corporate network that is constructed by the internet standard technology such as the communication protocol TCP/IP. There is a specific advantage such as building an application in collaboration with internet and the inteqration of operability.
Personal Computer	Generic term for IBM PC/AT (or 100% compatible) personal Computer.

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