Omron SYSMAC CP2E-E D Series

11 High-speed Counters
11-14
CP2E CPU Unit Software User’s Manual(W614)
11-3 High-speed Counter Interrupts
High-speed counter interrupts can be used with any model of CP2E CPU Unit.
This function counts input pulses with the CPU Unit’s built-in high-speed counter and executes an inter-
rupt task when the count reaches the preset value or falls within a preset range (target-value or zone
comparison). An interrupt task between 0 and 15 can be allocated with the CTBL instruction.
11-3-1 Overview
Target value comparison Range comparison
The specified interrupt program can be started when the
present value of the high-speed counter matches a target
value.
The specified interrupt program can be started when the
present value of the high-speed counter enters a set range.
END
END
Cycle
Rotary Encoder
Built-in input
Present value Present value matches set target value
Time
Interrupt task
Ladder diagram
Interrupt occurs
Cyclic tasks
(ladder programs)
I/O refresh
0
Instruction execution
condition
CTBL instruction executed
High-speed
Counter Unit
High-speed counter PV
Target value 1
Target value 2
Counting enabled
Time
Cyclic task
execution
Cyclic task
execution
Cyclic task
execution
Interrupted Interrupted
Interrupt task
execution
Interrupt task
execution
0
Instruction execution
condition
CTBL instruction executed
High-speed
Counter Unit
High-speed counter PV
Target value range
Counting enabled
Cyclic task
execution
Cyclic task
execution
Cyclic task
execution
Interrupted Interrupted
Interrupt task
execution
Interrupt task
execution
Time