View of the module status

General

The TSX CAY 2•/4• and 33 modules are provided with LEDs, used to display the state of the modules and channels.

Module state LEDs (RUN, ERR, I/O)

Three LEDs located on the front panel of the module provide information about the module’s operation through their state (LED off, blinking or lit):
- RUN LED: indicates the operating state of the module,
- ERR LED: indicates an internal module error,
- I/O LED: indicates an external error.
Channel state LEDs (CH.)

The TSX CAY 2•/4• and 33 modules have 2, 3 or 4 LEDs, which are used to display and diagnose the state of each channel. These LEDs are green.

Diagnostic Table

This table shows the diagnostics of the module according to the state of the LEDs:

	Lit	Blinking	Off
RUN	Module normal	/	Module switched off or experiencing a fault
ERR	Internal module error: module has broken down.	Communication error Application missing, invalid or experiencing a fault during execution	No error.
I/O	External module error: wiring fault Encoder supply and 10/30 V supply fault absolute encoder error (*)	/	No error.
CH TSX CAY 2• CH0 and CH1 TSX CTY 4•/33 CH0, CH1, CH2, CH3.	The channel is operational.	The channel is not functioning correctly due to: an external fault a communication error a processing error	Channel inoperative. The channel is not configured, or is badly configured.

(*) application fault:

Illustration of module LEDs: