Diagnostics Via Status Bits - Festo CPX-FB36 Electronics Description

4. Diagnostics
Network status when using the Modbus/TCP protocol
LED NS Sequence
ON
OFF
Is off
ON
OFF
Illuminates
green
Tab. 4/14: LED display MS (module status) for Modbus/TCP protocol - Part 2
4.3

Diagnostics via status bits

4-12
Status
No Modbus connection active
At least one Modbus
connection active.
Status bits are internal inputs (1 input byte), which serve to
display common diagnostic messages (global error mes-
sages).
Note
If status bits are to be transmitted via a "Polled" or
"Change of state" connection, you must set the DIL
switches on the bus node accordingly (
If all status bits supply logic 0, no error will be reported. The
following table shows the diagnostic information when there
is a 1-signal:
Bit Diagnostic information
with logic 1
0 Error at valve
1 Error at output
2 Error at input
Tab. 4/15: Overview of status bits - Part 1
Significance/error handling
–
–
Tab. 1/2).
Description
Module type in which an
error has occurred
Festo P.BE-CPX-FB36-EN en 1309NH English