Reading/Writing Word Devices Of Other Stations (Read/Write) - Mitsubishi Electric Melsec Q Series User Manual

4 WHEN THE Q/LCPU ACCESSES THE PROGRAMMABLE CONTROLLER
OF ANOTHER STATION USING THE DATA LINK INSTRUCTION

4.6 Reading/Writing Word Devices of Other Stations (READ/WRITE)

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This section explains the format and program examples of the READ/WRITE
instructions that are used to read and write data of word devices of other stations.
For details, see Sections 6.4, and 6.10 to 6.12.
(1) Instruction format
(a) READ/SREAD instructions
[Network number designation]
Read command
JP.READ
Read command
JP.SREAD
[Network module/Ethernet module start I/O signal designation]
Read command
GP.READ
Read command
GP.SREAD
1 The SREAD instruction can be programmed without argument (D3).
However, in such a case, the operation is identical to the READ instruction.
With the SREAD instruction, different operations are available depending on whether (D3) is omitted or
not.
2 When the target station is a Basic model QCPU or safety CPU, the read notification device set as
argument (D3) for the target station is ignored. (Same operation as with the READ instruction)
Jn
(S1) (S2) (D1)
Jn
(S1) (S2) (D1)
Un
(S1) (S2) (D1)
Un
(S1) (S2) (D1)
MELSEC-Q/L
JP: Execution
(D2)
during startup
JP: Execution
(D2) (D3)
during start up
1 2
GP: Execution
(D2)
during startup
GP: Execution
(D2) (D3)
during startup
1 2
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