Mitsubishi Electric MELSEC iQ-R Series User Manual page 21

Terminology
MC protocol
Multidrop connection
Nonprocedural protocol
ONDEMAND
OUTPUT
Packet
Predefined protocol
Predefined protocol support function
PRR
PUTE
Remote head module
SPBUSY
Target device
UINI
User frame
Description
An abbreviation for MELSEC communication protocol, which is a name of communication method to access a
CPU module form a target device using the communication procedure for Serial communication modules or
Ethernet communication modules
A name of connection when more than one target devices or other C24s are connected on a 1:n basis or an m:n
basis using the RS-422/485 interface of C24
A data communication function to communicate any data between a CPU module and the target device using
user's communication procedure
An abbreviation for G.ONDEMAND or GP.ONDEMAND
An abbreviation for G.OUTPUT or GP.OUTPUT
A data string used for communication with a target device by predefined protocol
A data communication function to send/receive data using a protocol of the target device for data communication
between C24 and the target device
This setting is configured with GX Works3 (the predefined protocol support function).
A function available using GX Works3 (the predefined protocol support function)
The function includes the following:
• Setting the protocol appropriate to respective target devices
• Writing or reading the protocol setting data to/from CPU module or C24
• Debug support function
An abbreviation for G.PRR or GP.PRR
An abbreviation for G.PUTE or GP.PUTE
An abbreviation for RJ72GF15-T2 CC-Link IE Field Network remote head module.
An abbreviation for G.SPBUSY or GP.SPBUSY
A generic term for GOT, measuring instruments, ID modules, barcode readers, regulators, and other C24s
connected to this C24 for data communication
An abbreviation for ZP.UINI
A data name used to send/receive data by registering the fixed format part of messages to be sent/received
between C24 and the target device to the module (The contents of a user frame data should conform to the
specifications of the target device.)
The data array of the head and tail sections in messages to be sent/received (transmission control code, C24
station number, sum check, fixed data, etc.) are registered to C24 respectively before use.
This is used for the on-demand function of MC protocol and the data transmit/receive function by nonprocedural
protocol.
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