Communication (Hart); Operating Options - Endress+Hauser PROline prosonic flow 90 Operating Instructions Manual

PROline Prosonic Flow 90
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Endress+Hauser
5.4

Communication (HART)

In addition to local operation, the measuring device can also be configured and meas-
ured values obtained by means of the HART protocol. Digital communication takes
place using the 4...20 mA current output HART (see Page 37).
The HART protocol allows the transfer of measuring and device data between the HART
master and the field devices for configuration and diagnostics purposes. The HART
master, such as a handheld terminal or PC-based operating programs (such as Field-
Tool), require device description (DD) files. They are used to access all the information
in a HART device. Information is exclusively transferred using so-called "commands".
There are three different command groups:
Universal commands:
All HART device support and use universal commands. The following functionalities are
linked to them:
x Recognizing HART devices
x Reading digital measured values (volume flow, totalizer, etc.)
Common practice commands:
Common practice commands offer functions which are supported and can be executed
by most but not all field devices.
Device-specific commands:
These commands allow access to device-specific functions which are not HART stand-
ard. Such commands access individual field device information, amongst other things,
such as empty/full pipe calibration values, low flow cut off settings etc.
Note!
The measuring device has access to all three command classes. On Page 47, you will
find a list with all the supported "Universal Commands" and "Common Practice Com-
mands".
5.4.1

Operating options

For the complete operation of the measuring device, including device-specific com-
mands, there are Device Description (DD) files available to the user to provide the
following operating aids and programs:
HART communicator DXR 275
Selecting device functions with a HART communicator is a process involving a number
of menu levels and a special HART function matrix.
The HART communicator operating instructions contain more detailed information on
the device.
FieldTool operating program
FieldTool is a universal service and configuration software package designed for the
PROline field devices. Connection is made using a HART modem, e.g. Commubox FXA
191.
The functionality of FieldTool includes the following:
x Configuration device functions
x Visualization measured values (including data logging)
x Data backup of device parameters
x Extended device diagnosis
x Measuring point documentation
You can find further information on FieldTool in the following E+H document:
System Information SI 031D/06/de "FieldTool"
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