CS1G-CPU44H Datasheet, PDF (14/27 Pages) Omron Electronics LLC – CS1 CPUs Mean Ultimate Performance

CPU Overview
Maintenance and Management
Interrupt Functions
Application
Executing programming without being affected
by the cycle time.
Solutions
• Use I/O interrupt tasks to execute interrupt programs when specific inputs turn
ON.
Interrupt program
Monitoring operating conditions at a specific
interval.
• Use a scheduled interrupt task to execute an interrupt program at a specific
interval.
Interrupt program
Executing emergency processing for power
interruptions.
Power OFF
• Use the power OFF interrupt task to execute an interrupt program before the
CPU stops. Immediate refreshing can be used inside this interrupt program to
refresh specified outputs.
Interrupt
program
Generating CPU interrupts when data is
received from a serial port.
• Use an interrupt from the Serial Communications Board to execute an interrupt
program when a specific messages received by the Board.
RS-232C
External device
Interrupt
program
Maintenance and Debugging Functions
Application
Creating a user-defined error for specific
conditions (e.g., errors or specific signals from
the controlled system) but allow the CPU to
continue running.
Solutions
• Use the FAL instruction to create a non-fatal user-defined error. An entry can also
be left in the error history when the error occurs.
Generates a non-fatal error.
Creating a user-defined error for specific
conditions (e.g., errors or specific signals from
the controlled system) and stop the CPU as a
result.
• FAL can also be used just to leave error history records for specific conditions
that are not necessarily errors.
• Use the FALS instruction to create a fatal user-defined error. An entry can also
be left in the error history when the error occurs.
Generates a fatal error.
• FALS can also be used to automatically stop operation for specific conditions that
are not necessarily errors.
C--24 Programmable Controller CS1