Festo CPX-FB38, Electronic Manual

Page: 93 / 120

3. Diagnosis
3−3
Festo P.BE−CPX−FB38−EN en 0804NH
3.1 Overview 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: Overview of the diagnostic options of the CPX terminal