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(2) Function
(a) READ 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 from devices of the target station is completed, the completion device (D2) turns on.
[Own station]
CPU module
(D1)
(b) Target stations that can be specified
For details on target stations which can be specified, refer to the following.
Page 236, Section 10.1 (1)
(c) Checking the execution status of the READ instruction
The execution status (completion or error) of the READ instruction can be checked using the following devices
specified in the setting data.
• Completion device (D2)
This device turns on in the END process of the scan where the READ instruction is completed and turns
off in the next END process.
• Completion status indication device ((D2)+1)
If the READ instruction fails, this device turns on in the END process of the scan where the READ
instruction is completed and turns off in the next END process.
252
Master/local module
READ
Channel 1
Channel 2
[Target station]
CPU module
(S2)
Network module
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