Srm1(-V2) Cycle Time; I/O Response Time - Omron CPM1 Programming Manual

8-3-3 I/O Response Time

Minimum I/O Response Time
SRM1(-V2) cycle
Communications
response time
Input on Slave
Output on Slave
Maximum I/O Response Time
SRM1(-V2) cycle
Communications
response time
Input on Slave
Output on Slave
The I/O response time is the time it takes after an input signal has been received
(i.e., after an input bit has turned ON) for the PC to check and process the in-
formation and to output a control signal (i.e., to output the result of the proces-
sing to an output bit).
CompoBus/S communications are started when the SRM1(-V2) input refresh fi-
nishes. The ON/OFF status is read from the Input Terminals during the input re-
fresh and the ON/OFF status is output to the Output Terminal during the output
refresh. Accordingly, the SRM1(-V2) I/O response time varies according to the
cycle time and CompoBus/S communications cycle status or I/O timing.
Example calculations of the I/O response time are provided next.
Minimum I/O response time =
Input ON delay + Output ON delay + CompoBus/S communications cycle time +

SRM1(-V2) cycle time

Input
delay
Maximum I/O response time =
Input ON delay + Output ON delay + CompoBus/S communications cycle time +
SRM1(-V2) cycle time x 2
Cycle time
Input
delay
Cycle time
CompoBus/S
cycle time
CompoBus/S
cycle time
Section 8-3
Output
delay
Output
delay