4
COMMISSIONING / OPERATION
18
H250 M40 ESK4
www.krohne.com
03/2014 - 4002251801 - AD H250/M40 PROFIBUS R01 en
Status value
Status value
Status value
Status value
The ESK4-PA PROFIBUS interface supports the PROFIBUS-PA Profile Version 3.02. In this
Profile the Condensed Status and Diagnosis has replaced by default the Classic Status and
Diagnosis of the PROFIBUS-PA Profile Version 3.0. The Condensed Status and Diagnosis has
been created to make diagnostic events more obvious and to allow predictive and preventive
maintenance. Nevertheless Classic Status and Diagnosis is still available for ESK4-PA
transmitters. It is implemented for backwards compatibility to "older" devices or PLC systems
which do not support Condensed Status and Diagnosis.
The device may be switched between "Condensed Status and Diagnosis" and "Classic Status and
Diagnosis"
•
automatically during start-up of the cyclic data transfer by setting the parameter PRM_COND
within the Set_Prm service data.
•
using an engineering tool (e.g. DD/DTM) to write the parameter COND_STATUS_DIAG (slot 0,
index 43).
Coding for both parameters is:
•
0: Classic Status
•
1: Condensed Status (factory setting)
The coding of the status value depends on the active status and diagnosis mode. It is described in
the following tables.
Condensed Status
Condensed Status
Condensed Status
Condensed Status
The Condensed Status codes have been defined to allow easier decoding of the information
provided by the PROFIBUS devices. The coding is shown in the following table:
INFORMATION!
The parameter COND_STATUS_DIAG cannot be modified directly if cyclic data transfer is active.
Nevertheless it is reset to the factory setting if a reset to default data is requested by an
engineering tool.
Quality
Quality substatus
Limits
Gr
Gr
QS
QS
QS
QS
Qu
Qu
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
0
0
= bad
0
1
= uncertain
1
0
= good (Non Cascade)
1
1
= good (Cascade) - not supported
AD_H250_M40_PB_PA_R01_en_4002251801_PRT.book Page 18 Friday, March 21, 2014 1:14 PM
