Endress+Hauser PROline promag 53 - Page 76

5Operation PROline Promag 53
76 Endress+Hauser
51 Write assignments of the
device variables to the four
process variables
Access = write
Setting of the device variables to the four
process variables:
– Byte 0: Device variable code to the primary
process variable
– Byte 1: Device variable code to the second
process variable
– Byte 2: Device variable code to the third
process variable
– Byte 3: Device variable code to the fourth
process variable
Code of the supported device variables:
See data on Page 70
Factory setting:
• Primary process variable = Volume flow
• Second process variable = Totalizer 1
• Third process variable = Mass flow
• Fourth process variable = OFF (not
assigned)
The variable assignment of the process varia-
bles is displayed as a response:
– Byte 0: Device variable code to the primary
process variable
– Byte 1: Device variable code to the second
process variable
– Byte 2: Device variable code to the third
process variable
– Byte 3: Device variable code to the fourth
process variable
53 Write device variable unit
Access = write
This command sets the unit of the given device
variables. Only those units which suit the device
variable are transferred:
– Byte 0: Device variable code
– Byte 1: HART unit code
Code of the supported device variables:
See data on Page 70
! Note!
• If the written unit is not the correct one for the
device variable, the device will continue with
the last valid unit.
• If you change the unit of the device variable,
this has no impact on the system units.
The current unit of the device variables is dis-
played in the device as a response:
– Byte 0: Device variable code
– Byte 1: HART unit code
! Note!
Manufacturer-specific units are represented
using the HART unit code “240”.
59 Write number of preambles in
response message
Access = write
This parameter sets the number of preambles
which are inserted in the response messages:
Byte 0: Number of preambles (2 - 20)
As a response, the current number of the pre-
ambles is displayed in the response message:
Byte 0: Number of preambles
Command No.
HART command / Access type
Command data
(numeric data in decimal form)
Response data
(numeric data in decimal form)