LEDs

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
(green)

ON

Data transmission on the K-bus is active

OFF

Data transmission on the K-bus is not active

Calibr.
(green)

ON

Calibration active

OFF

• Test active (if Measure LED not lit) or
• Measurement active (if Measure LED is lit)

Measure
(green)

ON

Measurement active (process data are valid)

OFF

• Calibration active (if LED Calibr. is lit) or
• Test active (if Calibr. LED not lit)

Diff.
(green)

ON

• Differential signal is calibrated (if Calibr. LED is lit) or
• Differential signal is checked (if LED Calibr. not lit)

Ref.
(green)

ON

• Reference signal is calibrated (if Calibr. LED is lit) or
• Reference signal is checked (if LED Calibr. not lit)

Err. Diff.
(red)

ON

• Channel 1 (strain gauge differential signal) is above the valid range (max. 0xFFFF)
• Internal reference voltage for channel 1 is missing

Err. Ref
(red)

ON

• Channel 2 (strain gauge reference signal) is above the valid range (max. 0xFFFF)
• Internal reference voltage for channel 2 is missing
• Channel 2 is less than about 1 V
• No communication with the A/D converter.
• Actual value from the test is outside the specified tolerance range