1522
15 NETWORK COMMON INSTRUCTIONS
15.1 Link Dedicated Instructions
• These instructions send the request data specified by (S2) in the own station to the target station specified by the target
network number and target station number of the control data. Upon completion of the request to the target station, the
completion device specified by (d2) turns on.
• For the target stations that can be specified, refer to the following.
Page 1449 Target networks and target station types
• When executing multiple link dedicated instructions concurrently, be careful not to overlap the channels of the link
dedicated instructions. Multiple link dedicated instructions specifying the same channel cannot be used concurrently.
• The execution status and the completion status of the REQ instruction can be checked with the completion device (d2) and
the completion status indication device (d2)+1.
CH: Channel
• Completion device (d2)
This device turns on during END processing of the scan where the REQ instruction completes, and turns off during the next END processing.
• Completion status indication device (d2)+1
This device turns on or off depending on the completion status of the REQ instruction.
When completed successfully: The device remains off.
When completed with an error: The device turns on during END processing of the scan where the REQ instruction completes, and turns off during the next END
processing.
REQ
(s2)
·
·
CH1
CHn
CPU module CPU module Network moduleNetwork module
[Own station] [Target station]
Reading/writing
clock data
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