Diagnosis and Display

Diagnosis:

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
 
     
Module error AX522
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 Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 40 Different hard-/firmware versions in the module Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 43 Internal error in the module Replace I/O module
11 / 12 ADR 1..10
3 14 1..10 31 31 36 Internal data exchange failure Replace I/O module
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 AX522
4 14 1..10 1

0…3

0…7

 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

0…3

0…7

 7 Analog value underflow at an analog input Check input value
11 / 12 ADR 1..10
4 14 1..10 1

0…3

0…7

 47 Short-circuit at an analog input Check terminal
11 / 12 ADR 1..10
4 14 1..10 3

0…3

0…7

 48 Analog value overflow at an analog output Check output value
11 / 12 ADR 1..10
4 14 1..10 3

0…3

0…7

 7 Analog value underflow at an analog output Check output value
11 / 12 ADR 1..10

Remarks:

In AC500 the following interface identifier applies:

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

The FBP diagnosis block does not contain this identifier.

With “Device” the following allocation applies:

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

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

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

Channel error: I/O-Bus or FBP = Module type (1 = AI, 3 = AO); COM1/COM2: 1..10 = Expansion 1..10
In case of module errors, with channel “31 = Module itself” is output.

Displays:

During the power ON procedure, the module initializes automatically. All LEDs (except the channel LEDs) are ON during this time.

Status of the LEDs Diagnosis LEDs

LED Status Color LED = OFF LED = ON LED flashes
Inputs 00…07 analog input yellow input is OFF input is ON (brightness depends on the value of the analog signal) –
Outputs 00…07 analog output yellow output is OFF output is ON (brightness depends on the value of the analog signal) –
UP process voltage 24 V DC via terminal green process voltage is missing process voltage OK –
CH-ERR2 Channel Error, error messages in groups (analog inputs or outputs combined into the groups 2 and 4) red no error or process voltage is missing serious error within the corresponding group error on one channel of the group
CH-ERR4 red
CH-ERR *) Module Error red – internal error –
*) Both LEDs (CH-ERR2 and CH-ERR4) light up together