Omron SYSMAC CS1W-ETN21 Operation Manual page 178

Communicating between OMRON PLCs
Normal Mode
Priority peripheral servicing
Parallel processing with syn-
chronous memory access
Parallel processing with
asynchronous memory
access
100Base-TX
10Base-T
Normal Mode
Priority peripheral servicing
Parallel processing with syn-
chronous memory access
Parallel processing with
asynchronous memory
access
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
settings
For details, refer to the CPU Unit operation manual.
Transmission processing time (command)
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
Reception processing time (command)
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
settings
For details, refer to the CPU Unit operation manual.
Processing time considerations
Set peripheral servicing time
(Default: 4% of CPU Unit cycle time)
1 ms max.
Command 0.550 ms
Number of words sent × 0.002 + 0.550 ms
Response
Delay time
Command 0.0118 ms
Number of words sent × 0.0013 + 0.0118 ms
Response
Command 0.0157 ms
Number of words sent × 0.0019 + 0.0157 ms
Response
Command 0.704ms
Number of words sent × 0.003 + 0.704 ms
Response
Processing time considerations
CPU Unit cycle time
Ethernet Unit is Time slice instruction execution time
given priority.
Ethernet Unit is not CPU Unit cycle time
given priority.
CPU Unit cycle time
0.2 ms + peripheral servicing time (1 ms max. of peripheral ser-
vicing time for each Special I/O Unit, CPU Bus Unit, peripheral
port, RS-232C port, or Inner Board)
Section 6-6
153