Siemens SIMATIC CP 440 Manual page 122

Diagnostics with the CP 440
Error Messages of the Display Elements
The table below describes the error messages of the display elements.
Table 8-1 Error Messages of the CP 440 Display Elements
Error LED
INTF comes on CP 440 signals internal fault, e.g.
EXTF comes
on
FAULT off
FAULT flashing
slowly
FAULT flashing
fast
FAULT comes
on
8-4
Error Description
protocol fault
CP 440 signals external fault, e.g.
break on the line.
Interface ready for operation
Interface initialized and ready for
operation but communication via
S7-400 backplane bus not
possible.
Incorrect parameter
No interface parameters
Point-to-point connection CP 440 Installation and Parameter Assignment
Remedy
Read the STATUS of the FB, or
read the diagnostic buffer of the
CP 440.
Read the STATUS of the FB, or
read the diagnostic buffer of the
CP 440.
–
Check the configuration for
incorrect entries (e.g. slot, ID no.,
etc.).
Check the parameter settings in
the CP441: Point-to-Point
Communication, Parameter
Assignment parameterization
interface.
Assign parameters with the
CP440: Point-to-Point
Communication, Parameter
Assignment parameterization
interface.
A5E00057742-02