Endress+Hauser Proline Prosonic Flow 90 Operating Instructions Manual page 55

Proline Prosonic Flow 90
Command No.
HART command / Access type
35 Write measuring range of primary
process variable
Access = write
38 Device status reset "Configuration
changed"
Access = write
40 Simulate output current of
primary process variable
Access = write
42 Perform device reset
Access = write
44 Write unit of primary process
variable
Access = write
48 Read additional device status
Access = read
Endress+Hauser
Command data
(numeric data in decimal form)
Write the desired measuring range:
– Byte 0: HART unit code for the primary process
variable
–
– Byte 1 4: Upper range, value for 20 mA
–
– Byte 5 8: Lower range, value for 4mA
Factory setting:
Primary process variable = Volume flow
!
Note!
• You can set or change the assignment of device
variables to process variables using Command 51.
• If the HART unit code is not the correct one for the
process variable, the device will continue with the
last valid unit.
none
Simulation of the desired output current of the primary
process variable. An entry value of 0 exits the simula-
tion mode:
–
Byte 0 3: Output current in mA
Factory setting:
Primary process variable = Volume flow
!
Note!
You can set the assignment of device variables to
process variables using Command 51.
none
Set unit of primary process variable Only unit which
are suitable for the process variable are transferred to
the device:
Byte 0: HART unit code
Factory setting:
Primary process variable = Volume flow
!
Note!
• If the written HART unit code is not the correct one
for the process variable, the device will continue
with the last valid unit.
• If you change the unit of the primary process
variable, this has no impact on the system units.
none
Response data
(numeric data in decimal form)
The currently set measuring range is shown as the
response:
– Byte 0: HART unit code for the set measuring range
of the primary process variable
–
– Byte 1 4: Upper range, value for 20 mA
–
– Byte 5 8: Lower range, value for 4mA
!
Note!
Manufacturer-specific units are represented using the
HART unit code "240".
none
The momentary output current of the primary process
variable is displayed as a response:
–
Byte 0 3: Output current in mA
none
The current unit code of the primary process variable is
displayed as a response:
Byte 0: HART unit code
!
Note!
Manufacturer-specific units are represented using the
HART unit code "240".
The device status is displayed in extended form as the
response:
Coding: see table on Page 57
5 Operation
55