BECKHOFF KL3132, KL3142, KL3152, KL3162, KL3172, KL3182: Product Overview

LEDs

LED	Display
K-Bus Power (green)	ON	K-Bus power supply (5 V) present
	OFF	K-Bus power supply (5 V) not present
K-Bus Run (green)	ON	K-Bus data transfer active
	OFF	K-Bus data transfer not active
Run 1 (green)	ON	Channel 1 active: process data contain valid analog value
	OFF	Channel 1 not active: calibration is being carried out, process data do not contain an up-to-date analog value (frozen) or channel is disabled (if LED Error 1 does not shine)
Error 1 (red)	ON	The analog value is above the valid measuring range as specified via register R21 of channel 1. The bit SB1.1 is set in status byte for channel 1. The analog value is below the valid measuring range as specified via register R22 of channel 1. The bit SB1.0 is set in status byte for channel 1.
	OFF	the analog value of channel 1 is within the valid measuring range (if LED Run 1 shines) or channel 1 is disabled (if LED Run 1 does not shine)
Run 2 (green)	ON	Channel 2 active: process data contain valid analog value
	OFF	Channel 2 not active: calibration is being carried out, process data do not contain an up-to-date analog value (frozen) or channel is disabled (if LED Error 2 does not shine)
Error 2 (red)	ON	The analog value is above the valid measuring range as specified via register R21 of channel 2. The bit SB2.1 is set in status byte for channel 2. The analog value is below the valid measuring range as specified via register R22 of channel 2. The bit SB2.0 is set in status byte for channel 2.
	OFF	the analog value of channel 2 is within the valid measuring range (if LED Run 2 shines) or channel 1 is disabled (if LED Run 2 does not shine)

Limiting the measuring range

The terminal indicates any violation of the measuring range to the higher-level controller via the status byte. If the current measured value

• is greater than specified in register R21, bit 1 of status byte is set.
• is less than specified in register R22, bit 0 of status byte is set.

In both cases, the ERROR LED of the respective channel will be on. This display can be deactivated with bit R32.8.