One-To-One Pc Link I/O Response Time - Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual

SRM1(-V2) Cycle Time and I/O Response Time

8-3-4 One-to-one PC Link I/O Response Time

Minimum I/O Response Time The SRM1(-V2) responds most quickly under the following circumstances:
1, 2, 3...
Input
point
Input ON delay (8 ms)
Input
bit
Master's cycle time (10 ms)
Output
point
Maximum I/O Response Time The SRM1(-V2) takes the longest to respond under the following circum-
1, 2, 3...
When two SRM1s are linked in a 1:1 PC Link, the I/O response time is the time
required for an input executed at one of the SRM1s to be output to the other
SRM1 by means of 1:1 PC Link communications.
1. The SRM1(-V2) receives an input signal just prior to the I/O refresh phase of
the cycle.
2. The Master's communications servicing occurs just as the Master-to-Slave
transmission begins.
3. The Slave's communications servicing occurs just after the transmission is
completed.
Program
execution
Master to
Slave
Transmission time (39 ms)
Min. I/O response time = 8+10+39+15+10 = 82 ms
stances:
1. The SRM1(-V2) receives an input signal just after the I/O refresh phase of
the cycle.
2. The Master's communications servicing just misses the Master-to-Slave
transmission.
I/O refresh
Overseeing, communica-
tions, etc.
Program
execution
Output ON
Slave's cycle time (15 ms) delay (10 ms)
Section 8-3
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