Mitsubishi QJ71GP21-SX, Reference Manual

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9
DEDICATED INSTRUCTIONS
9.8 J(P)/G(P).REQ (Reading/Writing Clock Data)
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(3) Function
(a) REQ instruction overview
The REQ instruction sends request data (S2) to the target station to request for
service.
The target station is specified in Target station network No. ((S1)+4) and Target
station No. ((S1)+5) of control data.
Upon completion of the request to the target station, the completion device (D2)
turns ON.
(b) Target stations available for specification
1) Target network
In addition to CC-Link IE controller network, stations in the following networks
can be also specified.
• MELSECNET/H
• MELSECNET/10
• Ethernet
2) Target station's CPU type
The REQ instruction is executable only when the target station has QCPU or
QnACPU.
The REQ instruction is not executable to the ACPU connected to
MELSECNET/10 or Ethernet.
Figure 9.58 REQ instruction
Clock data
read/write
CC-Link IE controller
network module CPU module CPU module
REQ
Network
module
(S2) Channel 1
Channel n
Channel 8
[Own station] [Target station]