C200Hx/Hg/He And Cqm1H-Series Plcs - Omron C200HW-CLK21 Operation Manual

Message Delay Times
8-4-2

C200HX/HG/HE and CQM1H-series PLCs

SEND(90)
SEND(90)
executed
270
The following diagram indicates the data flow which will yield the maximum
delay time from the time SEND(90) is executed by the user program to the
time the Controller Link Unit stores the data in the destination Unit's memory.
Transmission processing
Link Unit servicing (destination
node)
Max. transmission delay
Max. transmission delay = Link Unit servicing interval (source node) + Trans-
mission processing + Communications cycle time + Transmission delay +
Reception processing + Link Unit servicing interval (destination node).
Link Servicing Interval (Source and Destination Nodes)
Link service processing is the same as the PLC's peripheral servicing and is
approximately 1 ms for Controller Link Units.
Transmission Processing
Responses: Number of words transferred
Communications Cycle Time (with Data Links Inactive)
See 8-2 Communications Cycle Time (on page 251).
Transmission Delay Time
Transmission delay time varies with the baud rate.
Baud rate
2 Mbps Number of words transferred
1 Mbps Number of words transferred
500 Kbps Number of words transferred
Reception Processing
Responses: Number of words transferred
Note The I/O response time can increase due to noise or restrictions on the number
of frames that can be transmitted while the data link is operating.
Link Unit servicing
(source node)
Communications cycle
Transmission delay
Reception processing
Data stored
0.00125 ms + 3 ms
Transmission delay time
0.08 + 0.112 ms
0.016 + 0.224 ms
0.032 + 0.448 ms
0.00125 ms + 2.3 ms
Section 8-4