Principal Faults
(Original Document)
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Procedure
The table provides the corrective action to be taken for the principal faults encountered.
Type of fault
Causes of fault
Corrective action
BUS LED on
Network cable disconnected: various causes (physical fault)
  1. Reconnect the cable.
  2. Click on the Start Bus icon.
24 V module power supply cut-off: various causes
  1. Re-establish power supply.
  2. Click on the Start Bus icon.
Functions not carried out by the communication interfaces of the TSX IBY 100 and IBX 100 modules: elementary failure or faulty interface connection
  1. Switch off module power supply and power up again.
  2. Click on the Start Bus icon.
INTERBUS slave module declared but not present on the bus: programming error
  1. Make declared configuration equivalent to present configuration.
  2. Carry out a cold start.
INTERBUS slave module not declared but present on the bus: programming error
Incorrect reference declared for the slave module in the software configuration: programming error
Elementary failure of the slave device
  1. Switch off module power supply and power up again.
  2. Click on the Start Bus icon.
Functions not carried out by the communication interfaces of a slave: elementary failure or faulty interface connection (physical fault)
PF LED on
24 V power supply to module sensors cut-off: various causes
  1. Re-establish power supply.
  2. Click on the icon Flt. Ack..
24 V actuator power supply cut off: various causes
  1. Re-establish power supply.
  2. Click on the icon Flt. Ack..
Sensor I/O short-circuit: various causes
  1. Remove short-circuit.
  2. Click on the icon Flt. Ack..
Sensor input/power supply short-circuit: various causes
  1. Remove short-circuit.
  2. Click on the icon Flt. Ack..
QUAL LED on
Caused by electromagnetic interference on the slave device
  1. Isolate the cable.
Fallback outputs (maintained or reset)
PLC in STOP position
  1. Go to RUN position.
Outputs reset to "0"
Application not present in PLC:
  • operator error
  • PLC memory erased by electromagnetic interference
  1. Load an application.
  2. Go to RUN position.
Elementary failure of TSX IBY 100/IBX 100 module: various causes
  1. Replace module.
Elementary failure of PLC power supply: various causes
  1. Replace power supply.