Festo Контроллеры двигателя SFC-LAC - Manual (Page 146)

6. Diagnostics and error display
6−6
Festo GDCP−SFC−LACI−IO−EN en 0812NH
6.3 Diagnostic memory
The diagnostic memory contains the last 16 diagnostic messĆ
ages. It is backed up if possible in the event of power failure.
If the memory is full, the oldest element will be overwritten
(ring buffer).
Structure of the diagnostic memory
Parameters 1) 20C8
h
20C9
h
20CA
h
20CB
h
Format uint8 uint16 uint32 uint32
Meaning Diagnostic event Fault number Time stamp Cycle number
Subindex 1 Current diagnostic message
Subindex 2 Previous diagnostic message
... ...
Subindex 16 Oldest diagnostic message
1) See section B.2.3
Tab. 6/1: Diagnostic memory: structure
Configuration of the diagnostic memory with 20CCh
SI Description SpecifiĆ
cation Min Max
1 = 1: Record incoming and outgoing *) faults
= 2: Record only incoming faults
*) Outgoing fault = Acknowledge the fault
1 1 2
2 = 1: Resolution time stamp 10 ms
= 2: Resolution time stamp 1 ms 1 1 2
3 Deleting the diagnostic memory
Ĉ Writing with value = 1 deletes the diagnostic memory.
Ĉ Read will always reply with value = 1. 0 0 1
4 Read the number of entries in the diagnostic memory 0 0 16
Tab. 6/2: Diagnostic memory: configuration
You can read the diagnostic memory via FCT or the CI interĆ
face.