Omron SYSMAC CS1W-CLK13 Operation Manual page 256

Section 9-4
Message Delay Times
Max. transmission delay = Link servicing interval (local node) + Link service
processing (local node) + Transmission processing (command) + Communi-
cations cycle + Transmission delay (command) + Reception processing (com-
mand) + Link servicing interval (remote node) + Link service processing
(remote node) + Transmission processing (response) + Communications
cycle + Transmission delay (response) + Reception processing (response) +
Link servicing interval (local node) + Link service processing (local node).
Link Servicing Interval (Local and Remote Nodes)
Link servicing depends on the execution mode of the PLC. The execution
modes on the local and remote modes need not be the same.
For synchronous execution, links are serviced once per PLC execution cycle.
For asynchronous execution, links are serviced according to the peripheral
servicing interval. Refer to the CVM1 and CV-series PLCs Operation Manual:
Ladder Diagrams (W202) for details.
Link Service Processing (Local and Remote Nodes)
Link service processing is the same as the PLC's peripheral servicing and is
approximately 1 ms for Controller Link Units.
Transmission Processing
Commands: 2 ms
Responses: Number of words transferred × 0.00075 ms + 2 ms
Communications Cycle Time (with Data Links Inactive
See 9-2 Communications Cycle Time (on page 221).
Transmission Delay Time
Number of words transferred × 0.008 + 0.112 ms
Note Commands: Transmission delay time is calculated assuming that the number
of words to be transferred is zero.
Responses: Transmission delay time is calculated according to the number of
words to be transferred.
Reception Processing
Commands: 1.3 ms
Responses: Number of words transferred × 0.00075 ms + 2 ms
The I/O response time can increase due to noise or restrictions on the number
of frames that can be transmitted while the data link is operating.
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