Mitsubishi Electric MELSEC-A Series Manual page 164

4
REPLACEMENT OF THE MELSECNET/10 (PLC TO PLC NETWORK)
Instruction Name
Receive
message
RECVS
(completed
in 1 scan)
Other station
ZNRD word device
read
Other station
ZNWR word device
write
Remote
RRUN
RUN
*1 CPU modules of the following version or later when the target station is the A2UCPU(S1), A3UCPU, A4UCPU, or
A2USCPU(S1)
• A2UCPU(S1), A3UCPU, A4UCPU: Version AY (manufactured in July 1995) or later
• A2USCPU(S1): Version CP (manufactured in July 1995) or later
4
- 23
Execution
station
QCPU
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 target network number.
Network module
CPU
Channel1
ZNRD
* Fixed
Word device
2594
[A-compatible instruction]
Writes data to the CPU device of the target station having the
target network number.
Network module
CPU
Channel2
* Fixed
ZNWR
"Remote RUN" performed for other stations' CPU modules
CPU Network module
Channel 1
Channel 2
Channel 3
Channel 4
RRUN
Channel 5
Channel 6
Channel 7
Channel 8
: Can be used by both the control and normal stations, × : Cannot be used
Description
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) RECVS
I10
Logical channel 7 (channel 7)
Logical channel 8 (channel 8)
Network module
CPU
Word device
2594
Network module
CPU
Word device
361
Network module CPU
RUN
Target station
QnA/ AnU/
QCPU QnAS AnUS(H)
CPU CPU
×
*1
AnACPU
AnNCPU
*1
AnACPU
AnNCPU
× ×
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