Omron CJ1W-EIP21 用户手册

For details, refer to the CPU Unit’s Operation Manual.

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.)

The following table shows the CPU Bus Unit service cycle, which depends on
the CPU Unit’s CPU processing mode setting.

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.

Command

0.550 ms

Response

(Number of words being transferred 

×

 0.002) + 0.550 ms

100Base-TX Command

0.0118 ms

Response

(Number of words transferred 

×

 0.0013) + 0.0118 ms

10Base-T

Command

0.0157 ms

Response

(Number of words transferred 

×

 0.0019) + 0.0157 ms

Command

0.704 ms

Response

(Number of words being transferred 

×

 0.003) + 0.704 ms

Normal Mode (See note.)

One CPU Unit cycle time

Priority peripheral servicing

EtherNet/IP Unit or 
built-in EtherNet/IP 
port is given prior-
ity.

Time slice instruction execution 
time

EtherNet/IP Unit or 
built-in EtherNet/IP 
port is not given 
priority.

One CPU Unit cycle time

Parallel processing with syn-
chronous memory access

One CPU Unit cycle time

Parallel processing with asyn-
chronous memory access

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)

Normal Mode (See note.)

4% of CPU Unit cycle time

(10% for CJ2 CPU Units)

Priority peripheral servicing

EtherNet/IP Unit or 
built-in EtherNet/IP 
port is given prior-
ity.

Time slice peripheral servicing 
execution time

EtherNet/IP Unit or 
built-in EtherNet/IP 
port is not given 
priority.

Set peripheral servicing time
(Default: 4% of CPU Unit cycle 
time)