Controller functions
Page 40
UPT-606
Invalid error messages may appear when the
controller is switched off owing to the unde-
fined operating state. This must be taken into
account when they are evaluated by the higher-
level controller (e.g. a PLC) in order to avoid false
alarms.
9.13
Error messages
In addition to the fault diagnosis which is coded in the
protocol, you can also access the PROFIBUS diagno-
stics function (extended controller diagnosis). The error
codes appear in the configuring tool in plain text,
because they are stored in the device master file.
The table below shows how the analog voltage values
correspond with the faults that have occurred. It also
describes the fault and the required corrective action.
The error messages are listed in two separate tables for
controllers "up to software revision 015" and "as of soft-
ware revision 100". The block diagram in section 9.14
"Fault areas and causes" on page 45 permits each fault
to be cleared quickly and efficiently.
13 voltage levels for fault diagnostics appear at the
actual value output of all controllers as of software
revision 100. The error messages are differentiated
even more finely in the controller. The 3-digit error
codes described in brakets below can be displayed with
the ROPEX visualization software (
section 9.11
"Diagnostic interface/visualization software (as of soft-
ware revision 100)" on page 39) to facilitate trouble-
shooting.
If the actual value output is evaluated in order
to identify an error message - in the higher-
level controller, for instance - the tolerance window
must be adjusted to prevent it from being incor-
rectly interpreted. Please note the tolerances of the
actual value output (
section 5 "Technical data"
on page 8).
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