Beckhoff KL6904 User Manual download pdf (Page 45)

Operation

KL6904 43

4.3 Diagnostics

4.3.1 Diagnostic LEDs

4.3.1.1 Diag 1 (green)

The Diag 1 LED indicates the state of the TwinSAFE interface.

Flashing Code Meaning

LED illuminated continuously normal operation:

TwinSAFE communication OK

rapid flickering, alternating with 1 flash pulse Communication error: at least one connection is

not in Run state.

rapid flickering, alternating with 2 flash pulses Error in the function block

rapid flickering, alternating with 3 flash pulses Error in the function block and

communication error: at least one connection is

not in Run state.

These errors can be rest through a falling edge at the ERR_ACK input of the TwinSAFE group.

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Beckhoff KL6904 User Manual Page 45