Diagnostics Via Status Bits - Festo CPX-FB33 Operating Instructions Manual

Diagnostics
M – parameterisation modified or forcing active
LED Sequence
LED is off
LED on
LED flashes
Tab. 22: CPX terminal status LED – M
The display of the Forcen function has priority over the display of the setting for the system start.
9.3

Diagnostics via status bits

The CPX terminal provides 8 status bits - depending on the hardware configuration of the controller.
The status bits are used to display common diagnostic messages. Common diagnostic messages are
global error messages. 8 status bits are configured like inputs, the address can be freely selected
during configuration. The status bits are transmitted cyclically to the controller with all other inputs. If
all status bits return logic 0, an error will not be registered.
Diagnostics via status bits enables fast access to error messages in the PLC user program.
Bit Diagnostic information with logic 1
0 Error at valve
1 Error at output
26
Status
– Factory setting: system start
with default parameterisation
and current CPX configura-
tion.
– External parameterisation
possible.
– System start with saved
parameterisation and saved
CPX configuration.
– Parameters and CPX config-
uration are stored perma-
nently; external parameteri-
sation is blocked.
– Force is active.
Festo — CPX(-M)-FB33/34/35/43/44/45 — 2022-05f
Significance/error handling
–
Caution when replacing a CPX
terminal with saved parameteri-
sation, LED M on:
In case of servicing, such as
replacement of the CPX ter-
minal, parameterisation is not
established automatically by
the PLC or the higher-order
system. In this case, before
replacing check which settings
are required and adjust them if
necessary.
The Forcen function is enabled;
Force mode, function no. 4402
è CPX system description CPX-
SYS-...
Description
Module type in which an error has
occurred.