Link Dedicated Instruction Communication; Applicable Dedicated Instructions - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

1.8

Link Dedicated Instruction Communication

The link dedicated instructions are used to exchange random data between another network or other station's CPU module
connected to Ethernet, read/write arbitrary data, and access other stations such as remote RUN/STOP. If the initial processing
for the RJ71EN71 or the RnENCPU (network part) of the own station, relay station, and access station are completed
normally, the other station can be accessed with the link dedicated instructions.
This section describes the procedure for accessing a CPU module in another station on the same Ethernet line.
When exchanging data with a different network, refer to the following.
( Page 385 Communications with Different Networks)
Precautions
The CPU module (CPU part for the RnENCPU) cannot exchange data with the link dedicated instruction.

Applicable dedicated instructions

Shows the link-dedicated instructions used for data communication.
Instruction
SEND
RECV
RECVS
READ
SREAD
WRITE
SWRITE
REQ
ZNRD
ZNWR
For details on link dedicated instructions, refer to the following.
 MELSEC iQ-R Programming Manual (Module Dedicated Instructions)
1 FUNCTIONS
116
1.8 Link Dedicated Instruction Communication
Description
Sends data to another station.
Reads the receive data from another station. (for main program)
Reads the receive data from another station. (for interrupt program)
Reads data from the word device of another station.
Reads data from the word device of another station. (with completion device)
Writes data in the word device of another station.
Writes data in the word device of another station. (with completion device)
Requests the remote RUN/STOP to the CPU module on another station.
Reads/writes clock data from/to another station.
Reads data from the word device in another station (ACPU).
Writes data in the word device in another station (ACPU).