CS1G-CPU44H Datasheet, PDF (13/27 Pages) Omron Electronics LLC – CS1 CPUs Mean Ultimate Performance

CPU Overview
Maintenance and Management
J A Wide Range of Special Functions
Cycle Time Functions
Application
Reducing the cycle time.
Shorter cycle time
Solutions
• Place tasks that are not being executed on standby.
• Create subroutines for portions of tasks executed only under special conditions.
• Disable cyclic refreshing for Special I/O Modules when not required each cycle.
Eliminating deviations in I/O response time.
• Set the cycle time to a fixed time.
Set fixed time.
Stopping operation for long cycle times.
Over time
Operation
stopped.
• Use the cycle time monitoring function to stop operation when the cycle time is
too long.
Reducing I/O response time for
specific I/O.
Interrupt task
Interrupt input
High-
speed
I/O
Inputting signals (e.g., from photomicrosensors)
that are shorter than the cycle time.
Cycle time
Input pulse
Detected
• Use an I/O interrupt task to execute an interrupt program when a specific input
turns ON and then directly refresh external I/O when the appropriate instruction is
executed in the interrupt program.
External I/O can be directly refreshed, either by using immediate refreshing for
instruction operands or by using the IORF instruction to refresh all or a specified
portion of external I/O.
• Use the high-speed pulse input function of the C200H High-Density I/O Modules
(C200H Special I/O Modules). These Modules can detect 1-ms or 4-ms pulses
(except C200H-OD501/OD215,)
• Use the IORF instruction to refresh inputs during program execution to further
increase processing speed.
Programmable Controller CS1
C--23