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Analog Output Hub Documentation

Module status LEDs

Module status LEDs

The module status LEDs provide information about the operating voltage and the communication status of the device. The following table gives an overview of the different LED states and their meaning.

Display elements of the product

Module status LEDs
LED	Display	Meaning
US1	Red, flashing 1Hz	US voltage out of the operating voltage range
US1	Green, static	US voltage in the operating voltage range
UA	Red, flashing 1Hz	UA voltage out of the operating voltage range
	Red, static	No UA operating voltage at UA
	Green, static	UA voltage in the operating voltage range
IOL	Green, alternating with LED off in a ratio of 10:1, 1 s period	IO-Link communication is active. The device is ready.
IOL	Green, static	No communication

Port/Pin status LEDs - Analog output ports

Function	LED0	LED1
Port is deactivated	Off	Off
Port is activated, output signal available	Off	Static, yellow
Port is activated, short circuit on the analog output	Off	Static, red
Short circuit between Pin 1 and Pin 3	1 Hz flashing, red	1 Hz flashing, red

Port/Pin status LEDs - Analog input ports

Function	LED0	LED1
Port is deactivated	Off	Off
Port is activated, input signal on Pin 4 in range	Static, yellow	Off
Port is activated, input signal on Pin 2 in range	Off	Static, yellow
Port is activated, input signal on Pin 4 out of range	Static, red	Off
Port is activated, input signal on Pin 2 out of range	Off	Static, red
Short circuit between Pin 1 and Pin 3	1 Hz flashing, red	1 Hz flashing, red