Festo CPX - Diagnostic Functions; Status Bits; I;O Diagnostic Interface; Diagnostic Memory

1. Overview of components
1−25
Festo P.BE−CPX−SYS−EN en 0902e
Information about the module−specific parameters supported
by the module you use can be found in the manual for the
relevant module. Basic information on the different para
meters can be found in Appendix C in this manual.
Diagnostic functions
Extensive diagnostic information can be accessed depending
on the fieldbus used.
Status bits Common diagnostic messages (global error messages) are
displayed by means of 8 internal inputs (8 status bits).
I/O diagnostic interface With fieldbuses that do not possess extensive diagnostic
functions, the diagnostic information of the CPX terminals is
available via the I/O diagnostic interface.
The I/O diagnostic
interface enables bus−independent access to diagnostic in
formation, data and parameters via internal digital I/Os
(16inputs and 16 outputs).
Diagnostic memory Faults that occur during operation are entered in a diagnostic
memory. The first or the last 40 entries are saved, as well as
the relevant time measured from the moment
the power sup
ply was switched on.
Fieldbus−specific diagnos
tic functions
Special diagnostic functions or communication services are
available, depending on the fieldbus used. For example
communication services on:
 DPV1 (PROFIBUS)
 The PCP channel (Interbus)
 SDO access (CANopen)
 etc.