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15
TERM
Unless otherwise specified, this manual uses the following terms.
Term Description
Safety programmable controller
A generic term for a safety CPU module, a safety power supply module, a safety main base unit, a CC-Link Safety
master module, CC-Link Safety remote I/O modules, and a master/local module
Standard programmable controller
A generic term for MELSEC-Q series, MELSEC-L series, MELSEC-QnA series, MELSEC-A series, and MELSEC-
FX series modules (This term is used to distinguish a programmable controller that uses these modules from a
safety programmable controller.)
QSCPU Another term for the MELSEC-QS series CPU module
LCPU Another term for the MELSEC-L series CPU module
QCPU Another term for the MELSEC-Q series CPU module
QnACPU Another term for the MELSEC-QnA series CPU module
ACPU Another term for the MELSEC-A series CPU module
System A CPU A CPU module where the system A connector of a tracking cable is connected in a redundant system
System B CPU A CPU module where the system B connector of a tracking cable is connected in a redundant system
Control system CPU A CPU module that controls operations in a redundant system
Standby system CPU A CPU module that stands by in case the control system fails in a redundant system
Control CPU
A CPU module that controls connected I/O modules and intelligent function modules. In a multiple CPU system,
there are multiple CPU modules and each connected module can be controlled by a different CPU module.
Programming tool A generic term for GX Works2 and GX Developer
GX Developer
The product name of the software package for the MELSEC programmable controllers
GX Works2
CC-Link IE Field Network A high-speed and large-capacity open field network that is based on Ethernet (1000BASE-T)
CC-Link
A field network system where data processing for control and information can be simultaneously performed at high
speed
Safety CPU module The abbreviation for the QS001CPU safety CPU module
Master/local module
The abbreviation for the QS0J71GF11-T2 CC-Link IE Field Network master/local module. This module supports
safety functions.
Q series master/local module The abbreviation for the QJ71GF11-T2 CC-Link IE Field Network master/local module
L series master/local module The abbreviation for the LJ71GF11-T2 CC-Link IE Field Network master/local module
CC-Link Safety master module The abbreviation for the QS0J61BT12 CC-Link Safety system master module
Head module The abbreviation for the LJ72GF15-T2 CC-Link IE Field Network head module
Ethernet adapter module The abbreviation for the NZ2GF-ETB CC-Link IE Field Network Ethernet adapter module
CC-Link IE Field Network interface board The abbreviation for the Q81BD-J71GF11-T2 CC-Link IE Field Network interface board
Network module
A generic term for the following modules:
• Module on CC-Link IE Field Network
• CC-Link IE Controller Network module
• Ethernet interface module
• MELSECNET/H module
• MELSECNET/10 module
Intelligent function module
A MELSEC-Q/L series module that has functions other than input and output, such as an A/D converter module
and D/A converter module
Safety data Data exchanged through safety communication
Safety connection A connection established for safety communication
Safety communication A function to exchange safety data between safety stations on the same network
Standard communication A generic term for cyclic transmission and transient transmission
Cyclic transmission
A function by which data are periodically exchanged among stations on the same network using link devices (RX,
RY, RWw, and RWr)
Transient transmission
A function of communication with another station, which is used when requested by a dedicated instruction
or a programming tool
Safety station A generic term for a station that performs safety communication and standard communication
Standard station A generic term for a station that performs standard communication