9 PLC Setup
9-22
CJ2 CPU Unit Software User’s Manual
z Changing the Basic I/O Unit Rack Response Time
The Rack response time can be set for Basic I/O Units by Rack and slot. Increasing a setting
reduces the effects of chattering and noise. Decreasing a setting allows reception of shorter input
pulses. Do not set the ON response time or OFF response time to less than the cycle time.
The Rack response time settings are transferred to the Basic I/O Units when the PLC is turned ON.
When the Unit's settings are changed, they are stored in A220 to A259 (Actual Input Response
Times for Basic I/O Units). When the settings in the PLC Setup have been changed with the PLC in
PROGRAM mode, the PLC Setup settings will differ from the actual settings in the Units. In this
case, the values in A220 to A259 can be checked to see the input response times actually set in the
Units.
Input such as a
proximity sensor
Pulses shorter than the input
response time are not received.
Input bit
Input response time
Input response time
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