CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 318

• Manufacturer Part Number: CJ1W-EIP21
• Description: Ethernet I/P Module
• Manufacturer: Omron

Specifications of CJ1W-EIP21

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

I/O Response Time in Tag Data Links
Minimum Tag Data Link I/O Response Time
290
Note
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.
The I/O response time may be longer due to noise, or other events.
(1) Node 1
(PLC #1) input ON response time
(2) Transmission time (722 send data words)
(3) Node 2
(PLC #1) output ON response time
Total (tag data link I/O response time)
Transmission time =
(Number of send data words × 2 + 74) × 8 × 0.00001 ms
Input
(1) Input ON
response
time
Tag data link I/O response time
Calcu-
lation
(2) Network transmission delay time
Calcu-
lation
(3) Output ON
response time
Output
Input switch delay time
CPU Unit cycle time of PLC #1
CPU Unit cycle time of PLC #2
Output relay delay time
PLC #1 processing
Tag data link refresh cycle
PLC #2 processing
Section 10-3
: I/O processing
: Data exchange
1.5 ms
10.0 ms
0.121 msec
15.0 ms
2.0 ms
28.6 ms