Manual

A. Technical appendix
A−25
Festo P.BE−SFC−DC−PB−S7−EN en 0604NH
A.4 Diagnostic memory
The diagnostic memory contains the codes of the last 16 diag
nostic messages. The diagnostic memory is protected against
power failure. If the diagnostic memory is full, the oldest el
ement will be overwritten (FIFO principle).
Structure of the diagnostic memory
Parameters
1)
200 201 202
Format uint8 uint16 uint32
Meaning Diagnostic event Fault number Time
Subindex 1 Latest / current diagnostic message
Subindex 2 Last diagnostic message
... ...
Subindex 16 Oldest diagnostic message
1)
(see appendix B.1.2)
Tab.A/13: Structure of diagnostic memory
Configuration of the diagnostic memory with parameter 204 (see appendix B.1.2)
Sub
index
Description Specificat. Min. Max.
1 = 1: Record incoming and outgoing faults
= 2: Record only incoming faults
1 1 2
2 = 1: Resolution time stamp 10 ms
= 2: Resolution time stamp 1 ms
1 1 2
3 Deleting the diagnostic memory.
 Write with value = 1 deletes the diagnostic memory
 Read will always be answered with value = 0
0 0 1
4 Number of valid entries in the diagnostic memory 0 0 16
Tab.A/14: Structure of diagnostic memory