Proline Promag H 300 PROFINET System integration
Endress+Hauser 75
9.3 Cyclic data transmission
9.3.1 Overview of the modules
The following tables shows which modules are available to the measuring device for cyclic
data exchange. Cyclic data exchange is performed with an automation system.
Measuring device
Direction
Data flow
Control system
Module Slot
Analog Input module → 75 1…10, 18…20 →
PROFINET
Digital Input module → 76 1…10 →
Diagnose Input module → 76 1…10 →
Analog Output module → 78 14, 15 ←
Digital Output module → 80 16, 18…20 ←
Totalizer 1 to 3 → 77 11…13
←
→
Heartbeat Verification module → 80 17
←
→
9.3.2 Description of the modules
The data structure is described from the perspective of the automation system:
• Input data: Are sent from the measuring device to the automation system.
• Output data: Are sent from the automation system to the measuring device.
Analog Input module
Transmit input variables from the measuring device to the automation system.
Analog Input modules cyclically transmit the selected input variables, along with the
status, from the measuring device to the automation system. The input variable is depicted
in the first four bytes in the form of a floating point number as per the IEEE 754 standard.
The fifth byte contains status information pertaining to the input variable.
Selection: input variable
Slot Input variables
1…10
• Volume flow
• Mass flow
• Corrected volume flow
• Flow velocity
• Conductivity
• Corrected conductivity
• Temperature
• Electronics temperature
• Noise
• Coil current rise time
• Reference electrode potential against PE
18 to 20 Current input value
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