Mitsubishi Electric MELSEC iQ-R Series - Page 1468

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15 NETWORK COMMON INSTRUCTIONS
15.1 Link Dedicated Instructions
Processing details
• These instructions read the data from the specified word device in the target station specified by the target network number
and target station number of the control data or the target station specified by the IP address. Upon completion of reading
the device data, the completion device specified by (d2) turns on. In another station, upon completion of sending the device
data specified by (s2), the device specified by (d3) turns on.
• For the target stations that can be specified, refer to the following.
Page 1449 Target networks and target station types
• When "network number" and "station number" are specified ("0" is specified in bit 15 of (s1)+0) by the target station address
specification method, device data can be read also from stations connected to networks other than the stations connected
to the own station network. (If "IP address" is specified ("1" is specified in bit 15 of (s1)+0), device data cannot be read from
stations connected via a relay station.)
• 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 SREAD instruction can be checked with the send/receive instruction
flag, 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 SREAD 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 SREAD 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 SREAD instruction completes, and turns off during the next
END processing.
SREAD
(d1) (s2)
·
·
CH1
CHn
CPU module CPU module Network moduleNetwork module
[Own station] [Target station]