Functions; Communication In Cyclic Data Traffic - ProMinent DMT PROFIBUS DP Instructions Complémentaires

Functions

3 Functions
3.1

Communication in cyclic data traffic

The cyclic data frame comprises:
Tab. 1: All DMTs
Start byte len
1 1
2 4
6 1
7 1
8 1
9 1
10 4
14 1
15 1
Tab. 2: Device status
Pos Name
PROFIBUS®-
2 0
Mode
Initialisation
2
1
Error
2
2
38
Data type Identifiers
Byte Device status See table
Float MeasValue
Byte Measurement
unit
Byte MeasStatus
Byte Sensor type
Byte Sensor
quality
Float CorrValue
Byte CorrUnit
Byte CorrStatus
Status 0
Bus-ON
Operating status
No error
Explanation
Ä Tab. 2 'Device status'
on page 38
pH=0x50, ORP(Redox)=0x52,
Cl=0x43, Temp°C=0x54,
Temp°F=0x64,
Conductivity=0x4C
Measurement value specific (see
below)
Measurement value specific (see
below)
Measurement value specific (see
below)
°C=0x54, °F=0x64
See table "CorrStatus"
Status 1
Bus-OFF
DMT-in Init. Status
No error present