Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 203

6 PROGRAMMING
Link dedicated instruction list
Name
Instruction
Transient
REQ request to
other station
Receive
message
RECVS
(completed in
1 scan)
Read word
ZNRD device from
other station
Write word
ZNWR device to
other station
6 - 10
Description
Issues "remote RUN/STOP"
requests to other stations.
CPU Network module
Channel 1
Channel 2
Channel 3
Channel 4
REQ
Channel 5
Channel 6
Channel 7
Channel 8
Receives the channel data sent with SEND by the interrupt
program and immediately reads it to the CPU device. The
processing is completed when the instruction is executed.
CPU
Network module
Channel 1
Channel 2
SEND Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
[A-compatible instruction]
Reads the CPU device data from the target station having the
1
target network number.
[A-compatible instruction]
Writes data to the CPU device of the target station having the
1
target network number.
Network module
CPU
Channel2
Fixed
ZNWR
1: Cannot be used if the executing station or target station is a safety CPU.
2: Writing to a safety CPU is not allowed from other stations.
3: When the target station is an A2UCPU(S1), A3UCPU, A4UCPU, A2ASCPU(S1), or
A2USCPU(S1), use the CPU module with the following version or later.
• A2UCPU(S1), A3UCPU, A4UCPU: Version AY (manufactured since July, 1995) or later
• A2ASCPU(S1), A2USCPU(S1): Version CP (manufactured since July, 1995) or later
1
and "clock data read/write"
Network module CPU
STOP
CPU
Network module
Logical channel 1 (channel 1)
Logical channel 2 (channel 2)
Logical channel 3 (channel 3)
Logical channel 4 (channel 4)
Interrupt program
Logical channel 5 (channel 5)
Logical channel 6 (channel 6) I10
Logical channel 7 (channel 7)
Logical channel 8 (channel 8)
Network module
CPU
Word device
361
Target station
2
• QCPU
• RCPU
• LCPU
• QnACPU
• Safety CPU
1
• QCPU
RECVS
• QCPU
• RCPU
• LCPU
• QnACPU
3
• AnUCPU
• AnACPU
• AnNCPU
• QCPU
• RCPU
• LCPU
• QnACPU
3
• AnUCPU
• AnACPU
• AnNCPU
MELSEC-Q
Reference
section
Section 7.4.5 (3)
Section 7.5.5
Section 7.4.5 (4)
Section 7.4.5 (4)
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