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MC protocol 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
Multidrop connection 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
Nonprocedural protocol A data communication function to communicate any data between a CPU module and the target device using
user's communication procedure
ONDEMAND An abbreviation for G.ONDEMAND or GP.ONDEMAND
OUTPUT An abbreviation for G.OUTPUT or GP.OUTPUT
Packet A data string used for communication with a target device by predefined protocol
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).
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
PRR An abbreviation for G.PRR or GP.PRR
PUTE An abbreviation for G.PUTE or GP.PUTE
Remote head module An abbreviation for RJ72GF15-T2 CC-Link IE Field Network remote head module.
SPBUSY An abbreviation for G.SPBUSY or GP.SPBUSY
Target device A generic term for GOT, measuring instruments, ID modules, barcode readers, regulators, and other C24s
connected to this C24 for data communication
UINI An abbreviation for ZP.UINI
User frame 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.
Terminology Description
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