3. Diagnosis
3−3
Festo P.BE−CPX−FB38−EN en 0804NH
3.1 Over view of diagnostic possibilities
The CPX terminal provides extensive and user−friendly
possibilities for diagnostics and error handling. The following
options are available depending on the configuration:
Diagnostic
option
Brief description Advantages Detailed
description
LED display The LEDs show configuration
faults, hardware faults, bus
faults, etc. immediately.
Fast on−the−spot"
recognition of faults
Section 3.2
Status bits Internal inputs, which supply
coded common diagnostic
messages; the 8 status bits
are cyclically transmitted to
the module as inputs" with
the normal inputs.
Fast access to fault
messages in the PLC
user program regardless
of the module and I/O
controller
Section 3.3
I/O diagnostic
interface
Bus−independent diagnostic
interface at I/O level which
enables access to the internal
data of the CPX terminal; for
this function, 16 inputs and
16 outputs (2 byte) are
available.
Read access to internal
parameters and data at
I/O level
CPX system manual,
section on
diagnostics and
fault clearance
(P.BE−CPX−SYS−...),
instructions in
section 3.4
(P.BE−CPX−FB38−...)
Diagnostics via
the handheld
unit
Diagnostic information can be
shown on the handheld unit in
a user−friendly manner by
means of menus.
Fast on−the−spot"
recognition of faults in
plain text without
programming
Manual for the
handheld unit
(P.BE−CPX−MMI−1−...)
Tab.3/1: Over view of the diagnostic options of the CPX terminal
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