Festo CPX-CMAX-C1-1 User Manual

4. Faults and diagnostics
4−47
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
4.5 Diagnostics via standard functions of the CPX terminal
Faults in the CMAX or the connected modules are reported to
the CPX node as CPX error messages. The following sections
con ta i n the special features of the representation for the CPX−
specific diagnostic options.
I/O data module (control and status bytes, see sectio n 2.2),
 S tatus bits (see section 4.5.1),
I/O diagnostics interface (see section
4.5.2).
4.5.1 Status bits of the CPX terminal
Tab.4/18 shows error messages of the CMA X in the status
bits of the CPX terminal.
Bit
Diagnostic information
with 1−signal
Description Error cause CMAX
0 Error in valve
Module type in
which an error has

1 Error at output
which an error has
occurred

2 Error at input
occurred

3 Error on analogue module/
technology module
Bit 3 is set for all errors of the CMAX.
4 Undervoltage
Type of error

5 Short circuit/overload 
6 Wire break 
7 Other error 
Tab.4/18: Overview of status bits

Festo CPX-CMAX-C1-1 Specifications

General

Brand	Festo
Model	CPX-CMAX-C1-1
Category	Controller
Language	English