Справочник Пользователя для FMC Corporation - Talstar 80

Proline Promass 80 PROFIBUS PA

Troubleshooting

71

Serious system errors are always recognized by the instrument as "Fault message" and are shown 
as a lightning flash (

$) on the display! Fault messages immediately affect the 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 FMC Technologies. 

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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! 
See the information on 

The device status can be queried using an operating program (e.g. FieldCare):
Function block SUPERVISION 

→ SYSTEM → OPERATION → ACTUAL SYSTEM CONDITION

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 (Class 1) 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. 36: 

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 
(Class 1) via the quality byte:

• For FAILSAFE_TYPE 

→ FSAFE VALUE:

Quality

Code

Measuring value

Limits

Quality Substatus

Quality

Status

Byte 5

0x48
0x49

0x4A

UNCERTAIN

Substitute set

OK

Low

High