I/O Response Time; Cpm2C-S I/O Response Time - Omron CPM2C-S100C Operation Manual

I/O Response Time

7-2

I/O Response Time

7-2-1

CPM2C-S I/O Response Time

Minimum I/O Response
Time
Input
point
Input ON delay (10 ms)
Input
bit
Output
point
Maximum I/O Response
Time
Input
point
Input ON delay (10 ms)
Input
bit
Program execution
I/O refreshing
and other processes
Output
point
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 pro-
cess the information and to output a control signal (i.e., to output the result of
the processing to an output bit). The I/O response time varies according to the
timing and processing conditions.
The minimum and maximum I/O response times are shown here, using the
following program as an example.
The following conditions are taken as examples for calculating the I/O
response times.
Input ON delay:
Overseeing time:
Instruction execution time: 14 ms
Output ON delay:
Communications ports:
The CPM2C-S responds most quickly when it receives an input signal just
prior to I/O refreshing, as shown in the illustration below.
Program execution and other processes
I/O refreshing
Min. I/O response time = 10 + 15 + 15 = 40 ms
The CPM2C-S takes longest to respond when it receives the input signal just
after the input refresh phase of the cycle, as shown in the illustration below. In
that case, a delay of approximately one cycle will occur.
I/O refreshing
(15 ms)
Max. I/O response time = 10+15 × 2+15 = 55 ms
Input
10 ms (input time constant: default setting)
1 ms (includes I/O refreshing)
15 ms
Not used.
I/O refreshing
(15 ms)
Output ON delay (15 ms)
Program execution
and other processes
(15 ms)
Section 7-2
Output
I/O refreshing
Output ON delay (15 ms)
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