Endress+Hauser CNGmass DCI, Operating Instructions Manual

Page: 34 / 88

Operation CNGmass DCI
34 Hauser
Common Practice Commands
Command No.
HART command / Access type Command data
(numeric data in decimal form) Response data
(numeric data in decimal form)
34 Write damping value for primary
process variable
Access = write Bytes 0-3: Damping value of the primary
process variable in seconds
Factory setting:
Primary process variable = Mass flow
Displays the current damping value in the device:
Bytes 0-3: Damping value in seconds
35 Write measuring range of primary
process variable
Access = write Write the desired measuring range:
– Byte 0: HART unit code of the primary
process variable
– Bytes 1-4: End of measuring range,
value for 20 mA
– Bytes 5-8: Start of measuring range,
value for 4 mA
Factory setting:
Primary process variable = Mass flow
!
Note!
• You can set 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.
The currently set measuring range is displayed as a response:
– Byte 0: HART unit code for the set measuring range of the
primary process variable
– Bytes 1-4: Upper range, value for 20 mA
– Bytes 5-8: Start of measuring range, value for 4 mA
!
Note!
Manufacturer-specific units are represented using the HART unit
code "240".
38 Device status reset (Configuration
changed)
Access = write none none
40 Simulate output current of
primary process variable
Access = write Simulation of the desired output current of the
primary process variable.
An entry value of 0 exits the simulation mode:
Byte 0-3: Output current in mA
Factory setting:
Primary process variable = Mass flow
!
Note!
You can set the assignment of device variables
to process variables with Command "51".
The momentary output current of the primary process variable is
displayed as a response:
Byte 0-3: Output current in mA
42 Perform master reset
Access = write none none
44 Write unit of primary process
variable
Access = write 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 = Mass 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.
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".
48 Read additional device status
Access = read none The device status is displayed in extended form as the response:
Coding:
È
table
→
ä
36