Omron CJ1W-EIP21 用户手册

The minimum tag data link I/O response time, which occurs when there are no
processing delays, is calculated as follows.

When the baud rate is 100 Mbps, the transmission time can be calculated with
the following equation. If a network delay does not occur, just this transmis-
sion time is added.

Transmission time =
(Number of send data words 

×

 2 + 74) 

×

 8 

×

 0.00001 ms

The I/O response time may be longer due to noise, or other events.

Output

: I/O processing

: Data exchange

Tag data link I/O response time 

(1) Input ON 
response 
time 

(2) Network transmission delay time

(3) Output ON 
response time 

Input

Calcu-
lation 

Calcu-
lation 

PLC #1 processing 

Tag data link refresh cycle 

PLC #2 processing 

Input device 

Transmission  

path 

Output  

device 

PLC #1

PLC #2

(1) Node 1 

(PLC #1) input ON response time 

Input switch delay time

1.5 ms

CPU Unit cycle time of PLC #1 

10.0 ms

(2) Transmission time (722 send data words) 

0.121 msec

(3) Node 2 
(PLC #1) output ON response time 

CPU Unit cycle time of PLC #2 

15.0 ms

Output relay delay time

2.0 ms

Total (tag data link I/O response time) 

28.6 ms