Omron CJ1W-EIP21 - 10-2010 Operation Manual page 326

Message Service Transmission Delay
Send Processing
Transmission Delay
Receive Processing
CPU Bus Unit Service
Cycle (Remote Node)
CPU Bus Unit Service
Processing Time (Remote
Node)
298
For details, refer to the CPU Unit's Operation Manual.
Command 0.550 ms
(Number of words being transferred × 0.002) + 0.550 ms
Response
The transmission delay time depends on the baud rate set for the EtherNet/IP
Unit or built-in EtherNet/IP port, as shown in the following table. (There may
be additional delays due to the other devices in the network, such as switch-
ing hubs.)
Baud rate
100Base-TX Command 0.0118 ms
Response
10Base-T Command 0.0157 ms
Response
Command 0.704 ms
(Number of words being transferred × 0.003) + 0.704 ms
Response
The following table shows the CPU Bus Unit service cycle, which depends on
the CPU Unit's CPU processing mode setting.
CPU execution mode
Normal Mode (See note.)
Priority peripheral servicing
Parallel processing with syn-
chronous memory access
Parallel processing with asyn-
chronous memory access
Note CJ2 CPU Units support only Normal Mode.
For details, refer to the CPU Unit's Operation Manual.
The following table shows the CPU Bus Unit service processing time, which
depends on the CPU Unit's CPU processing mode setting.
CPU execution mode
Normal Mode (See note.)
Priority peripheral servicing
Delay time
(Number of words transferred × 0.0013) + 0.0118 ms
(Number of words transferred × 0.0019) + 0.0157 ms
Processing time details
One CPU Unit cycle time
EtherNet/IP Unit or Time slice instruction execution
built-in EtherNet/IP time
port is given prior-
ity.
EtherNet/IP Unit or One CPU Unit cycle time
built-in EtherNet/IP
port is not given
priority.
One CPU Unit cycle time
0.2 ms + peripheral servicing time (1 ms max. for
peripheral servicing of each Special I/O Unit, CPU
Bus Unit, peripheral port, RS-232C port, and Inner
Board)
Processing time details
4% of CPU Unit cycle time
(10% for CJ2 CPU Units)
EtherNet/IP Unit or Time slice peripheral servicing
built-in EtherNet/IP execution time
port is given prior-
ity.
EtherNet/IP Unit or Set peripheral servicing time
built-in EtherNet/IP (Default: 4% of CPU Unit cycle
port is not given time)
priority.
Section 10-5