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7.2 PROFIBUS FAULT AND WARNINGS
Profibus-related Fault and Warning conditions will be automatically detected and indicated on the Model 1056
display. The main display of the Model 1056 includes a Fault and Warning banner on the lower portion of the
display that will intermittently flash if any Fault or Warning condition exists.
Profibus-related Fault conditions are detected errors that require immediate operator intervention to correct
Profibus communication problems related to hardware, software, or network integrity.
Profibus-related Warning conditions are less critical errors or potential problems related to Profibus hardware, soft-
ware, or network integrity. Operator intervention is advised to inspect and diagnose these conditions.
2. Select Fault and/or Warning. Press ENTER. Based on the condition of the Profibus installation and net
work connection, there are three Faults and three Warnings that can be generated. The following table
provides all possible Profibus Faults and Warnings and lists their conditions and probable causes.
MODEL 1056DP SECTION 7.0
PROFIBUS DIAGNOSTICS, FAULTS, WARNINGS
To locally access details about Profibus Fault and
Warning conditions,
1. Press DIAG. The following screen will appear
if a Profibus fault or warning exists.
S1: 1.234µS/cm 25.0ºC
S2: 12.34pH 25.0ºC
Diagnostics
Faults
Warnings
Sensor 1
Sensor 2
Profibus
Out 1: 12.05 mA
Out 2: 17.08 mA
1056-01-20-30-DP
Instr SW Ver: xx.xx
Displayed Text: Condition Probable Cause(s)
Fault:
Profi-board Mismatch
If Profibus card major revision is
not in the main board’s Profibus
major revisions list.
Main board software is too old.
Fault:
Profi Self-Test Fail
At least one of the internal power-
on self-tests failed.
Bad hardware component.
Fault:
Profi Internal Comm
Main board detects a Profibus card
installed, but Profibus card is not
sending messages to the main
board.
Bad hardware component.
Displayed Text: Condition Probable Cause(s)
Warning:
Profibus short/open
Detected when static potential on
Profibus B lead <= static potential
on A lead.
No Profibus cable connected or A
and B wires are shorted.
Warning:
Profibus wires A & B reversed
Detected when data activity is
present on Profibus, but data polar
ity is observed as inverted.
Profibus A and B wires are
reversed.
Warning:
Profibus function limited
If Profibus card minor revision is
greater than the main board’s
minor revision.
Main board software is too old.