Owner's manual

40 - 8644/phoenix
SYSTEM DESCRIPTION
Diagnosis LEDs directly at the station
Determining the cause of error
The error type and number may be determined from the LEDs FS and FN, which are to be found above the
supply terminal of the field bus nodes. If diode FS lights, the number of flashes of FN shows the error
type. If diode FS is off, the number of flashes of FN shows the error number.
Error type and number are simultaneously notified via the PROFIBUS to the control system.
Example:
LED FS lights and LED FN simultaneously flashes three times. Then LED FS extinguishes and LED
FN flashes four times (error type 3, number 4). The cause of error is the use of an INTERBUS Loop-1
module which is not permissible.
Display / LEDs
DIAGNOSIS AND ERROR ELIMINATION AT THE PROFIBUS DP BUS NODE
Abb-rev Colour Meaning Explanation
UM green Main supply
Supply voltage in main circuit for field bus nodes, logic supply and
interrfaces present.
US green Segment supply
Supply voltage present in segment circuit.
BF red Bus Fault
No data exchange with master.
FS red Failure Select
Select function of LED FN:
FS lights: FNshow the error type.
FS does not light: FN show the error number.
FN red Failure Number
The number of flashes indicates the error tyoe of error number,
depending on whether FS lights or not.