Diagnosis Via Status Bits - Festo CPX-FB11 Manual

3. Diagnosis and error treatment
3.3

Diagnosis via status bits

3−12
Status bits are internal inputs (1 input byte) which serve to
display common diagnostic messages (global fault mess
ages). The status bits are transmitted via the communication
type Strobed I/O".
Please note
If status bits are to be transmitted via a Polled" or
Change of State" connection, you must set the DIL
switches on the field bus node accordingly (see Tab. 1/3).
If all status bits supply a 0−signal, no fault will be registered.
The following table shows the diagnostic information when
there is a 1−signal:
Bit Diagnostic information
with 1−signal
0 Fault at valve
1 Fault at output
2 Fault at input
3 Fault on analogue module/
function module
4 Undervoltage
5 Short circuit/overload
6 Cable fracture
7 Other faults
Tab. 3/3: Overview of status bits
If various faults occur simultaneously on various types of
modules, these faults cannot be assigned via the status bits.
Faults can be clearly defined via the I/O diagnostic interface
of by diagnosis via DeviceNet access.
Description
Module type on which a
fault has occurred. fault has occurred
Type of fault
Festo P.BE−CPX−FB11−E N en 0503b