Indicators - Omron CJ1W-CT021 Operation Manuals

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Indicators

The indicators on the LED-display show the operating status of the Unit. The following table shows the
meaning of the indicators.
LED Colour
RUN Green
ERC Red
ERH Red
CH1/2 Green
A/B/ Z Yellow
I0/I1 Yellow
O0/O1 Yellow
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
CT021
RUN ERC ERH
CH1 A B Z
CH2 A B Z
State Description
ON Unit is in operation (i.e. Unit has initialized normally
after the Controller is reset or the Unit is restarted).
OFF Any of the following
• No registration in Unit Configuration
• No power supply from Power Supply Unit
• Unit WDT error
• Unit hardware failure
ON Unit has operational failure due to a detected error.
(For a list of all the errors that can cause an opera-
tional failure, see 5-2 Error codes.)
OFF Unit has no operational failure.
ON CPU Unit has operational failure. (For a list of all
the errors that can occur at the CPU Unit see 5-1
Error Indicators)
OFF CPU Unit has no operational failure.
ON Channel 1/2 (i.e. Counter 1/2) is ready to count (the
corresponding counting gate is open).
OFF Counter 1/2 is not ready to count (the correspond-
ing counting gate is closed).
ON Input A/B/Z has turned ON.
(Every Counter is characterised by the signals
A/B/Z.)
OFF Input A/B/Z is turned OFF.
ON Digital Input (I0/I1) is turned ON.
OFF Digital Input (I0/I1) is turned OFF.
ON Digital Output (O0/O1) is turned ON.
OFF Digital Output (O0/O1) is turned OFF.
2 Components, Installation and Wiring
I0 O0
I1 O1
2
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