Omron CQM1H - PROGRAM User Manual

492
Cycle Time Section 7-3
The following conditions are taken as examples for calculating the I/O
response times.
Input ON delay: 8 ms
Overseeing time: 1 ms
Instruction execution time: 14 ms
Output ON delay: 10 ms
Position of output instruction: Beginning of program
Communications ports: Not used.
Note The input ON delay for DC Input Units can be set in the PC Setup.
Minimum I/O Response
Time
The CQM1H responds most quickly when it receives an input signal just prior
to the input refresh phase of the cycle, as shown in the illustration below.
When cyclic output refreshing is used:
Minimum I/O response time = 8 + 15 + 10 = 33 ms
When direct output refreshing is used:
Minimum I/O response time = 8 + 1 + 10 = 19 ms
Note Faster response times (100
µs standard) can be achieved by using input inter-
rupts and direct output refreshing.
Maximum I/O Response
Time
The CQM1H 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.
When cyclic output refreshing is used:
Minimum I/O response time = 8 + 15
× 2 + 10 = 48 ms
When direct output refreshing is used:
Minimum I/O response time = 8 + 15 + 10 = 33 ms
Input ON delay
With direct output refresh
Instruction execution
Output ON
delay
Cycle time
With cyclic output refresh
I/O refresh
Overseeing, etc.
Output point
Input
point
Input
bit
CPU
processing
Instruction execution
Cycle time
I/O refresh
Overseeing, etc.
Input ON delay
Input
point
Input
bit
CPU
processing
Instruction execution Instruction execution Instruction execution
Output ON
delay
Output point
With direct output refresh With cyclic output refresh

Omron CQM1H - PROGRAM Specifications

General

Brand	Omron
Model	CQM1H - PROGRAM
Category	Controller
Language	English