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4 WHEN THE QCPU ACCESSES THE OTHER STATION PLC USING THE
DATA LINK INSTRUCTION
4.5.2 Data sending/receiving for receive with an interrupt program (SEND/RECVS)
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This section explains the format and program examples of the RECVS instruction for
receive when sending/receiving data between the PLC CPUs.
For details on the instruction format and program examples of the SEND instruction,
see Section 4.5.1.
For more details, see Sections 6.5 and 6.9.
(1) Instruction format
(a) SEND instruction
Same as the instruction format described in Section 4.5.1.
(b) RECVS instruction
[Ethernet module start I/O signal designation]
Receive command
Z.RECVS
Description of setting
Start I/O signal of the local station Ethernet module
Un
Designate by higher two digits when the I/O signal is
expressed by three digits.
Control data storage head device
(S)
Designate the head device of the local station that stores
the control data.
Send data storage head device
(D1)
Designate the head device of the local station that stores
the receive data.
(D2)
Designate dummy data
1: Bit device .................................. X, Y, M, L, F, V, B
2: Word device ............................... T, C, D, W, ST, R, ZR
3: Word device bit designation ......
(Un)
(S)
(D1)
(D2)
0 to FE
Word device
Word device
Bit device
Word device bit designation
Word device
.
Bit number
MELSEC-Q
Z: Executed at rise
Setting range
H
2
2
1
3
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