Troubleshooting Promag 53 PROFIBUS DP/PA
132 Endress+Hauser
9.2 System error messages
Serious system errors are always recognized by the measuring device as a "fault message"
and shown as a lightning flash symbol (
$
) on the display! Fault messages immediately affect
the inputs and outputs. Simulations and positive zero return, on the other hand, are classed
and displayed as "Notice messages".
"
Caution!
In the event of a serious fault, a flowmeter might have to be returned to the manufacturer
for repair. Important procedures must be carried out before you return a flowmeter to
Endress+Hauser. → 155
Always enclose a duly completed "Declaration of contamination" form. You will find a
preprinted blank of this form at the back of this manual.
!
Note!
• The error types listed in the following correspond to the factory settings.
• See the information on → 73
9.2.1 Displaying the device status on PROFIBUS DP/PA
Display in the operating program (acyclic data transmission)
The device status can be queried using an operating program (e.g. FieldCare):
Function block SUPERVISION SYSTEM OPERATION ACTUAL SYSTEM CONDITION
Display in the PROFIBUS master system (cyclic data transmission)
If the AI or TOTAL modules are configured for cyclic data transmission, the device status is
coded in accordance with PROFIBUS Profile Specification 3.0 and transmitted with the
measured value to the PROFIBUS master by means of the quality byte (byte 5). The quality
byte is split into the "quality status", "quality substatus" and "limits" segments.
a0002707-en
Fig. 67: Structure of the quality byte
The content of the quality byte depends on the failsafe mode error behavior configured in
the corresponding Analog Input function block. Depending on which failsafe mode has been
set in the FAILSAFE_TYPE function, the following status information is transmitted to the
PROFIBUS master via the quality byte:
• For the selection FAILSAFE_TYPE FSAFE VALUE :
Quality
Code
Measuring value
Limits
Quality Substatus
Quality
Status
Byte 5
Quality code (HEX) Quality status Quality substatus Limits
0x48
0x49
0x4A
UNCERTAIN Substitute set
OK
Low
High
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