Diagnostic Parameters - Festo CPX Series Manual

4. Faults and diagnostics
4.3

Diagnostic parameters

4.3.1 Latest diagnostic status
Parameter
Bit−encoded messages
PNU 220
PNU 221
Message on the dis
play
PNU 224
PNU 226
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
The CMAX offers various parameters for the current diagnos
tic messages.
PNU
220
221
224
225
226
227
Tab. 4/4: Diagnostic parameters
Description
Each parameter is a bitfield consisting of three uint32 values and thus
contains 3x 32 bits = 96 bit memory capacity. Each of these bits in this
array represents an error number. If it is set, the corresponding fault
message is active.
Example:
PNU 220:01 = 0x00000001
PNU 220:02 = 0x00000040
PNU 220:03 = 0x00030000
This representation is optimized for evaluation by a PLC, since this bit en
coding can be used directly to activate an MMI.
PNU 220: contains current faults
PNU 221: contains current warnings
The PNU 224 contains the fault number currently being shown on the dis
play. This makes synchronisation between the display in the FCT and the
CMAX possible. It is always the fault that occurred first that is displayed.
The PNU 226 contains the warning number the FCT is supposed to display.
The warning is not shown on the CMAX display.
Brief description
Active fault messages bit−encoded
Active warning messages, bit−encoded
Currently indicated fault 'Exx' on the display
Currently active fault level
Current warning to be indicated in the FCT
Error status, bit−encoded for FCT
Bit 0 set
Bit 38 (32+ 6) set
Bit 80 (32 + 32 + 16) set
Bit 81 (32 + 32 + 17) set
E01 active
E39 active
E81 active
E82 active
4−31