ProMinent Dulcometer DMT, Supplementary Instructions Manual

Page: 43 / 106

3 Functions
3.1 Communication in cyclic data traffic
The cyclic data frame comprises:
All DMTs
Start byte len Data type Identifiers Explanation
1 1 Byte Device status See table
Ä
“Device status” Table
on page 43
2 4 Float MeasValue
6 1 Byte Measurement
unit
pH=0x50, ORP(Redox)=0x52,
Cl=0x43, Temp°C=0x54,
Temp°F=0x64,
Conductivity=0x4C
7 1 Byte MeasStatus Measurement value specific (see
below)
8 1 Byte Sensor type Measurement value specific (see
below)
9 1 Byte Sensor
quality
Measurement value specific (see
below)
10 4 Float CorrValue
14 1 Byte CorrUnit °C=0x54, °F=0x64
15 1 Byte CorrStatus See table "CorrStatus"
Device status
Pos Name Status 0 Status 1
2
0
PROFIBUS®-
Mode
Bus-ON Bus-OFF
2 1
Initialisation Operating status DMT-in Init. Status
Functions
43