Festo CPX-FB37 Translation Of The Original Instructions page 74

5 Diagnostics
Composition of the emergency message – error register (byte 2)
1)
Bit Meaning
0 Generic error
1 Current
2 Voltage
3 —
4 Communication error
5 ... 6 —
7 Manufacturer specific
1) Bold = Bit is used by CPX terminal
Tab. 5.18 Error register (index 1001 with bit assignment according to DS301/401)
Further diagnostic information is provided by the CPX terminal in bytes 3 ... 6 of the emergency object
(manufacturer status register, index 1002).
Composition of the emergency message – status bits (byte 3)
Bit Meaning
0 Error at valve
1 Error at output
2 Error at input
3 Error on analogue
module/function module
4 Undervoltage
5 Short circuit/overload
6 Wire break
7 other error
Tab. 5.19 Manufacturer status register – status bits
Composition of the emergency message – CPX module number (byte 4)
Bit Meaning
0 ... 7 CPX module number
Tab. 5.20 Manufacturer status register – CPX module number
74
Explanation
Bit is set for each error
– Short circuit/overload in sensor supply
– Short circuit/overload at the outputs
– U (undervoltage of outputs)
OUT
– U (undervoltage of valves)
VAL
– Failure of load voltage at CPX output module or
input module
—
Node guard, heartbeat, fieldbus-specific only
—
– Wire break
– other error
Explanation
Module type in which an error has occurred
Error type
Explanation
Number of the module with diagnostic message
Festo – P.BE-CPX-FB37-EN – 1406NH – English