Omron CJ1W-CT021 Operation Manual page 24

Features and Functions
Noise Filtering
Run-time Configurable
Interrupt Support
Support Software
Quick Start Up Reference
Guide
4
For the purpose of suppressing noise on the signal lines A and B of every Counter
and on the Digital Input lines noise filters can be used. A noise filter can be con-
figured. The cut-off frequencies for the signal lines A and B can be set to:
• 10 kHz
• 50 kHz (default)
• 500 kHz
For the Digital Inputs 10 kHz and 50 kHz (default) noise filters can be configured.
Refer to 3-7-4 "Noise Filtering".
Configuration settings of the Unit can be changed at Run-time by using the IOWR-
instruction to be able to quickly adjust to changing application needs without the
need of restarting the Unit or stopping the Counters. Care, however, must be taken
when changing configuration settings. Refer to 3-5 "Output Control" for informa-
tion.
All Outputs and Digital Inputs can be configured to generate interrupts to the PLC
in order to have a minimal response time enabling fast control of applications.
Generating interrupts is only possible when the High-speed Counter Unit is
mounted on a CPU-backplane.
The Unit can be configured by using CX-Programmer Support Software or a Pro-
gramming Console.
For a quick overview of all the features and functions that the High-speed Counter
Unit offers to you, refer to 1-4 "Quick Start Up Reference Guide". This section also
contains references to the particular section(s) in the Manual where you can read
more detailed information about specific features and functions of the High-speed
Counter Unit.
Section 1-1