Overview - Omron SYSMAC CJ Series User Manual

5 Quick-response Inputs
5-1

Overview

By setting an input on the Pulse I/O Module to quick-response input operation, inputs with signal widths
as small as 30 µs can be read with certainty regardless of the cycle time. Use the quick-response inputs
to read signals shorter than the cycle time, such as inputs from photomicrosensors.
Connector-
Terminal Block
Conversion Unit
Pulse signal from photomicrosensor or other device
The pulse widths of quick-response input signals must meet the following conditions.
30 µs min.
150 µs min.
ON
OFF
5-2
Pulse I/O Module CJ2M CPU Unit
Connecting Cable
Pulse signal
Cyclic task
(ladder program)
Cycle time
Can read ON signals
shorter than this time.
END
I/O refresh
Cycle time
Input bit
ON for one scan
in the next cycle
CJ2M CPU Unit Pulse I/O Module User's Manual
I/O refresh