ProMinent DMT PROFIBUS DP Instructions Complémentaires page 46

Functions
[user_data fields] are used to signal errors. The [user_data fields] are each combined
The
in blocks of 3 bytes and are interpreted as follows:
Service
n
Error type
n
Type of data access (read/write)
n
Thus up to 19 errors can be signalled.
Encoding user_data
Tab. 17: Service
Index Identifiers
[Device status]
0x 01
[MeasValue]
0x 02
[Measurement unit]
0x 03
[MeasStatus]
0x 04
[MeasCalVal1]
0x 05
[MeasCalVal2]
0x 06
[MeasMin]
0x 07
[MeasMax]
0x 08
[Sensor type]
0x 09
[Sensor quality]
0x 0A
[CorrValue]
0x 0B
[CorrValManual]
0x 0C
[CorrUnit]
0x 0D
[CorrStatusSwitch]
0x 0E
[CorrStatus]
0x 0F
[CorrMin]
0x 10
46
Explanation
See cyclic data traffic
See cyclic data traffic
See cyclic data traffic
See cyclic data traffic
Calibration value zero point (pH, Cl), cell constant
(conductivity)
Calibration value slope (pH, Cl), temperature coeffi‐
cient (conductivity)
Lower limit value
Upper limit value
See cyclic data traffic
See cyclic data traffic
See cyclic data traffic
Manual correction variable transmitted from the
master
See cyclic data traffic
Transmitted from the master Correction on/off, cor‐
rection auto/manual
See cyclic data traffic
Temperature lower limit value