I/O Response Time; Appendix C I/O Response Time - Omron WT30-CA2M Operation Manual

I/O Response Time

Compared with a wired network, wireless communications may be delayed due to the influence of the sur-
rounding electromagnetic environment, making it difficult to achieve the calculated response time. The calcula-
tion method is provided here as a guide.
The response time required until an input signal from the I/O Slave Station reaches the personal computer or
PLC via the Serial Master Station can be estimated as follows:
T1: I/O Slave Station input filter (10 ms/100 ms)
T2: Serial Master Station wireless communications delay (TWCY) × 2
T3: The CompoWay/F command and response execution time and the time required for the Serial Master Sta-
tion to return a response. This value depends on the communications baud rate and number of data.
T : I/O Unit output ON (OFF) delay time
OUT
T : Command send time
CMD
Input
PC/PLC
Serial Master Station
I/O Slave Station
T1
Input filter
10 ms/100 ms
Output
Command
send time
PC/PLC
Serial Master Station
I/O Slave Station
T
CMD
For details on the command send time, refer to 3-6-4 Input Hold on page 53.
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Appendix C

I/O Response Time

Command
send time
Cycle × 2
= 10 ms × n stations
T
WCY
T T
WCY WCY
T2
= 10 ms × n stations
T
WCY
T T
WCY WCY
Cycle × 2
T2 T
Output delay
(approx. 1 ms)
Response
receive time
Wait
Approx. 50 ms
max.
T3
OUT
99