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(2) Function
(a) RIWT instruction overview
The instruction writes data by the specified number of words (control data ((S1)+4)) from the own station start
device (S2) into the target station devices (specified in (S1)+2 and (S1)+3).
Specify the target stations in control data ((S1)+1).
When reading of target station's data is completed, the completion device (D) turns on.
[Own station]
CPU module
(S2)
(b) Target stations that can be specified
For details on target stations which can be specified, refer to the following.
Page 239, Section 10.1 (2)
(c) Checking the execution status of the RIWT instruction
The execution status (completion or error) of the RIWT instruction can be checked using the following devices
specified in the setting data.
• Completion device (D)
This device turns on in the END process of the scan where the RIWT instruction is completed and turns off
in the next END process.
• Completion status indication device ((D)+1)
If the RIWT instruction fails, this device turns on in the END process of the scan where the RIWT
instruction is completed and turns off in the next END process.
354
Master/local
module
RIWT
Send buffer
[Target station]
CPU module
(S1)+2
(S1)+3
Master/local
module
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