Appendix 5 Dedicated Instruction; Link Dedicated Instructions - Mitsubishi Electric MELSEC iQ-R Series User Manual

Appendix 5
This section describes dedicated instructions that can be used in the Motion module.
For details on dedicated instructions, refer to the following.
 MELSEC iQ-R Programming Manual (Module Dedicated Instructions)
Precautions
■ Data change
Do not change any data specified (such as control data) until execution of the dedicated instruction is completed.

Link dedicated instructions

The following table lists the instructions used for transient transmission to or from programmable controllers on other stations.
Each link dedicated instruction allows access to a station on a network other than CC-Link IE TSN.
Instruction Description
READ Reads the data in units of words from devices in the programmable controller of another station.
SREAD Reads the data in units of words from devices in the programmable controller of another station.
When reading of the data is completed, another station devices are turned on.
WRITE Writes the data in units of words to devices in the programmable controller of another station.
SWRITE Writes the data in units of words to devices in the programmable controller of another station.
When writing of the data is completed, another station devices are turned on.
SEND Sends data to the programmable controller of another station.
RECV Reads the data received from the programmable controller of another station. (For a main routine program)
REQ Requests the remote RUN/STOP to the programmable controller of another station.
Reads/writes clock data from/to the programmable controller of another station.
Transient transmission ranges
In a single network system, communication with all stations on the network is possible.
In multi-network system, communications can be made with stations up to eight networks apart.
Precautions
■ When multiple link dedicated instructions are executed simultaneously
When executing multiple link dedicated instructions simultaneously, check that the channels for the instructions are not
duplicated. Link dedicated instructions with a same channel number cannot be executed simultaneously. To use the same
channel for multiple link dedicated instructions, configure an interlock so that an instruction is executed after completion of
another.
■ When different communication speeds are set for the master station and target station
• When executing a dedicated instruction, execute it on the master station.
• Do not execute multiple dedicated instructions simultaneously. If multiple dedicated instructions are executed
simultaneously, the other dedicated instruction may not be executed. When executing multiple dedicated instructions,
configure an interlock so that an instruction is executed after completion of another.
Dedicated Instruction
APPX

Appendix 5 Dedicated Instruction

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