Diagnosis

In cases of short circuit or overload, the digital outputs are turned off. The modules performs reactivation automatically. Thus an acknowledgement of the errors is not necessary. The error message is stored via the LED.

E1..E4 d1 d2 d3 d4

Identifier

000..063

 AC500 display <− Display in
Class Comp Dev Mod Ch Err PS501 PLC browser

Byte 6

Bit 6..7

 - Byte 3 Byte 4 Byte 5

Byte 6

Bit 0..5

 FBP diagnosis block
Class Interface Device Module Channel Error Identifier Error message Remedy
  *1) *2) *3) *4)      
Module error DA502
3 14 1..10 31 31 19 Checksum error in the I/O module Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 3 Timeout in the I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 40 Different hard-/firmware versions in the module
11 / 12 ADR 1..10
3 14 1..10 31 31 43 Internal error in the module
11 / 12 ADR 1..10
3 14 1..10 31 31 36 Internal data exchange failure
11 / 12 ADR 1..10
3 14 1..10 31 31 9 Overflow diagnosis buffer New start
11 / 12 ADR 1..10
3 14 1..10 31 31 26 Parameter error Check master
11 / 12 ADR 1..10
3 14 1..10 31 31 11 Process voltage too low Check process voltage
11 / 12 ADR 1..10
4 14 1..10 31 31 45 Process voltage is switched off (ON −> OFF) Process voltage ON
11 / 12 ADR 1..10
Channel error DA502
4 14 1..10 4 22..29   *5) 47 Short-circuit at a digital output Check connection
11 / 12 ADR 1..10
Channel error DA502
4 14 1…10 1 16..19   *6) 48 Analog value overflow or broken wire at an analog input Check input value or terminal
11 / 12 ADR 1..10
4 14 1…10 1 16..19   *6) 7 Analog value underflow at an analog input Check input value
11 / 12 ADR 1..10
4 14 1…10 1 16..19   *6) 47 Short-circuit at an analog input Check terminal
11 / 12 ADR 1..10
4 14 1…10 3 20..21   *7) 4 Analog value overflow at an analog output Check output value
11 / 12 ADR 1..10
4 14 1…10 3 20..21   *7) 7 Analog value underflow at an analog output Check output value
11 / 12 ADR 1..10

Remarks:

* 1)

In AC500 the following interface identifier applies:

14 = I/O-Bus,  11 = COM1 (e.g. CS31 bus), 12 = COM2.
* 2)

With “Device” the following allocation applies:

31 = Module itself, 1..10 = Expansion module 1..10, ADR = Hardware address (e.g. of the DC551)
* 3)

With “Module” the following allocation applies dependent of the master:

Module error: I/O-Bus: 31 = Module itself; COM1/COM2: 1..10 = Expansion 1..10

Channel error: I/O-Bus = Module type (1 = AI, 3 = AO, 4 = DC); COM1/COM2: 1..10 = Expansion 1..10
* 4) In case of module errors, with channel “31 = Module itself” is output.
* 5) Ch = 22..29 indicates the digital inputs/outputs DC16..DC23
* 6) Ch = 16..19 indicates the analog inputs AI0..AI3
* 7) Ch = 20..21 indicates the analog outputs AO0..AO1