14
TERMS
Unless otherwise specified, this manual uses the following terms.
Term Description
Baton pass A token to send data over a network
Buffer memory A memory in an intelligent function module, where data (such as setting values and monitoring values) are
stored. When using the CPU module, the memory is indicated for storing data (such as setting values and
monitored values) of the Ethernet function and data used for data communication of the multiple CPU function.
CC-Link IE Controller Network-equipped
module
A generic term for the RJ71GP21-SX CC-Link IE Controller Network module and the following modules when the
CC-Link IE Controller Network function is used:
• RJ71EN71
• RnENCPU
CC-Link IE Field Network A high-speed and large-capacity open field network that is based on Ethernet (1000BASE-T)
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.
CPU module The abbreviation for the MELSEC iQ-R series CPU module
CPU module (built-in Ethernet port part) A built-in Ethernet port part of the CPU module (CPU part for the RnENCPU) (MELSEC iQ-R Ethernet/CC-
Link IE User's Manual (Startup))
Cyclic transmission A function by which data are periodically exchanged among stations on the network using link devices
Data link A generic term for cyclic transmission and transient transmission
Dedicated instruction An instruction for using functions of the module
Device A device (X, Y, M, D, or others) in a CPU module
Disconnection A process of stopping data link if a data link error occurs
Engineering tool A generic term for GX Works3 and MR Configurator2
Ethernet adapter module The abbreviation for the NZ2GF-ETB CC-Link IE Field Network Ethernet adapter module
Ethernet device A generic term for the devices supporting IP communication (such as personal computers)
Ethernet-equipped module A generic term for the following modules when the Ethernet function is used
• RJ71EN71
• CPU module
Global label A label that is enabled for all program data when creating multiple program data in the project. There are two
types of global labels: module label that is automatically generated by GX Works3 and label that can be created
for the any of the specified devices.
Head module The abbreviation for the LJ72GF15-T2 CC-Link IE Field Network head module
Intelligent device station A station that exchanges I/O signals (bit data) and I/O data (word data) with another station by cyclic
transmission. This station responds to a transient transmission request from another station and also issues a
transient transmission request to another station.
Intelligent function module A MELSEC iQ-R series module that has functions other than input and output, such as an A/D converter module
and D/A converter module
Label A label that represents a device in a given character string
Link device A device (RX, RY, RWr, or RWw) in a module on CC-Link IE Field Network
Link refresh Automatic data transfer between a link device of the Simple Motion module and a device in a CPU module
Link scan (link scan time) Time required for all the stations on the network to transmit data. The link scan time depends on data volume and
the number of transient transmission requests.
Link special register (SW) Word data that indicates the operating status and data link status of a module on CC-Link IE Field Network
Link special relay (SB) Bit data that indicates the operating status and data link status of a module on CC-Link IE Field Network
Local station A station that performs cyclic transmission and transient transmission with the master station and other local
stations
Master operating station A station that controls the entire network in the network where a master station and submaster station are
connected. Only one master station can be used in a network.
Master station A station that controls the entire network. This station can perform cyclic transmission and transient transmission
with all stations. Only one master station can be used in a network.
Master/local module A generic term for the RJ71GF11-T2 CC-Link IE Field Network master/local module and the following modules
when the CC-Link IE Field Network function is used:
• RJ71EN71
• RnENCPU
Module label A label that represents one of memory areas (I/O signals and buffer memory areas) specific to each module in a
given character string. GX Works3 automatically generates this label, which can be used as a global label.
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