Omron CS1W-ETN21 Transmission processing time command, Transmission Delay Command, Response

Communicating between OMRON PLCs Section 6-6

CPU Bus Unit Service Processing Time (Local Node 1)

The processing time will be as follows, depending on the CPU processing mode settings at the CPU Unit:

CPU processing mode	Processing time considerations
settings
Normal Mode	Set peripheral servicing time
	(Default: 4% of CPU Unit cycle time)
Priority peripheral servicing
Parallel processing with syn-	1 ms max.
chronous memory access
Parallel processing with
asynchronous memory
access

For details, refer to the CPU Unit operation manual.

Transmission processing time (command)

Command	0.550 ms
Response	Number of words sent ⋅ 0.002 + 0.550 ms

Transmission Delay (Command)

The transmission delay time will be as follows, depending on the baud rate set for the Ethernet Unit. (There may be additional delays depending on devices such as hubs in the network configuration.)

Baud rate		Delay time
100Base-TX	Command	0.0118 ms
	Response	Number of words sent ⋅	0.0013 + 0.0118 ms
10Base-T	Command	0.0157 ms
	Response	Number of words sent ⋅	0.0019 + 0.0157 ms

Reception processing time (command)

Command	0.704ms
Response	Number of words sent ⋅ 0.003 + 0.704 ms

CPU Bus Unit Service Cycle (Remote Node)

The processing time will be as follows, depending on the CPU processing mode settings at the CPU Unit.

CPU processing mode	Processing time considerations
settings
Normal Mode	CPU Unit cycle time
Priority peripheral servicing	Ethernet Unit is	Time slice instruction execution time
	given priority.
	Ethernet Unit is not	CPU Unit cycle time
	given priority.
Parallel processing with syn-	CPU Unit cycle time
chronous memory access
Parallel processing with	0.2 ms + peripheral servicing time (1 ms max. of peripheral ser-
asynchronous memory	vicing time for each Special I/O Unit, CPU Bus Unit, peripheral
access	port, RS-232C port, or Inner Board)

For details, refer to the CPU Unit operation manual.

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