BEI Sensors PHU9 Absolute Hollow Shaft Encoder - Manual (Page 29)

PROFIBUS USER MANUAL
Preliminary 29
BEI IDEACOD SAS
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6.3 Status indication by the LEDs
Two LEDs indicate the status of the encoder in
the profibus network.
The red LED is used to display errors, the green
one displays the status of the encoder. Both
LEDs can have one of three possible
conditions: dark, bright and flashing. Five of
the nine possible combinations are used to
indicate a special condition.
If there are any problems with starting-up the
system, the state of the LEDs can give
important information about the error cause.
No. Red LED Green LED Status / possible cause
1 Dark Dark No power supply.
2 Bright Bright Encoder is ready for operation but it has not received any
configuration data after power on.
Possible causes: address setting incorrect, Bus lines not
connected correctly.
3 Flashing Bright Parameter or configuration error.
The encoder receives configuration or parameter data with
incorrect length or inconsistent data.
Possible cause: parameter value “total measuring range” too
high
4 Dark Bright Normal operation in data exchange mode
5 Dark Flashing Commissioning mode