LEDs

K-bus power
(green)

ON

Power supply (5 V) available on the K-bus

OFF

No power supply (5 V) available on the K-bus

K-Bus Run
(green)

ON

Data transmission on the K-bus is active

OFF

Data transmission on the K-bus is not active

Run 1
(green)

ON

Channel 1 active:

• process data contain valid analog value

OFF

Channel 1 not active:

• Calibration is performed, analog value in the process data not current (frozen or zero)
• or channel 1 is switched off (if LED error 1 not lit)

Error 1
(red)

ON

• Analog value of channel 1 is above the valid measuring range, specified through register R21 of channel 1. Bit SB1.1 is set in the status byte of channel 1.
• Analog value of channel 1 is below the valid measuring range, specified through register R22 of channel 1. Bit SB1.0 is set in the status byte of channel 1.
• Calibration is in progress. The LED goes out when the calibration is complete.

OFF

• Analog value of channel 1 is within the valid measuring range (if LED Run 1 is lit)
• or channel 1 is switched off (if LED Run 1 is not lit)

Run 2
(green)

ON

Channel 2 active:

• process data contain valid analog value

OFF

Channel 2 not active:

• Calibration is performed, analog value in the process data not current (frozen or zero)
• or channel 2 is switched off (if LED error 2 not lit)

Error 2
(red)

ON

• Analog value of channel 2 is above the valid measuring range, specified through register R21 of channel 2. Bit SB2.1 is set in the status byte of channel 2.
• Analog value of channel 2 is below the valid measuring range, specified through register R22 of channel 2. Bit SB2.0 is set in the status byte of channel 2.
• Calibration is in progress. The LED goes out when the calibration is complete.

OFF

• Analog value of channel 2 is within the valid measuring range (if LED Run 2 is lit)
• or channel 2 is switched off (if LED Run 2 is not lit)