Festo CPX-FB23, Electronic Manual

Page: 90 / 122

3. Diagnosis and error treatment
3−4
Festo P.BE−CPX−FB23−EN en 0308NH
3.1 Overview of diagnostic possibilities
The CPX terminal offers extensive and user−friendly possibi
lities of diagnosis and fault treatment. The following possibi
lities are available depending on the configuration:
Diagnostic
possibility Brief description Advantages Detailed
description
LED display The LEDs show directly configur
ation faults, hardware faults, bus
faults, etc. Fast on−the−spot"
recognition of faults Section 3.3
Status bits Internal inputs which supply
coded common diagnostic
messages.
The 8 status bits are transmitted
to the module as Inputs" cycli
cally with the normal inputs. Fast access to fault
messages, irrespective
of the module and
master. Section 3.4.1 and
CPX system
manual
I/O diagnostic
interface The I/O diagnostic interface is a
bus−independent diagnostic inter
face at I/O level which enables
access to internal data of the CPX
terminal (16 inputs and 16 out
puts). Detailed fault recogni
tion: the diagnostic
data can be processed
further, e.g. by a PLC
user program. Section 3.4.2 and
CPX system
manual
Diagnosis via the
handheld Diagnostic information can be
shown on the CPX handheld in a
user−friendly manner by means of
menus. Fast on−the−spot"
recognition of faults Manual for the
handheld
Tab.3/1: Diagnostic possibilities
Please note
Note that the available diagnostic information can depend
on the DIL switch settings on the field bus node as well as
on the parametrizing of the CPX terminal.