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(2) Function
(a) SREAD instruction overview
The instruction reads data by the specified number of words (control data ((S1)+9)) from the target station start
device (S2) into the own station word devices (after (D1)).
Specify the target stations in control data ((S1)+4 and (S1)+5).
When the reading of the data specified in (S2) is completed, the following devices are turned on.
• Own station: Completion device (D2)
• Target station: Read notification device (D3)
(b) Target stations which can be specified
For details on target stations which can be specified, refer to the following.
Page 152, Section 10.1 (1)
(c) Checking the execution status of the SREAD instruction
The execution status (completion or error) of the SREAD instruction can be checked using the following device
specified for the setting data.
• Completion device (D2)
It is turned on in the END processing of the scan after completion of the SREAD instruction, and is turned
off in the next END processing.
• Completion status indication device ((D2)+1)
It is turned on in the END processing of the scan after completion of the SREAD instruction, and is turned
off in the next END processing only if the SREAD instruction fails.
Channel 1
Channel 2
Safety CPU module CPU module Network moduleMaster/local module
(D1) (S2)
SREAD
[Own station] [Target station]