Endress+Hauser Proline Promag 51, Operating Instructions Manual

Page: 65 / 124

Proline Promag 51 5 Operation
Hauser 65
50 Read assignment of the device
variables to the four process
variables
Access = read
none Display of the current variable assignment of the proc-
ess 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
Factory setting:
• Primary process variable: Code 1 for volume flow
• Second process variable: Code 250 for totalizer 1
• Third process variable: Code 0 for OFF (not
assigned)
• Fourth process variable: Code 0 for OFF (not
assigned)
!
Note!
You can set or change the assignment of device varia-
bles to process variables using Command 51.
51 Write assignments of the device
variables to the four process varia-
bles
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 60
Factory setting:
• Primary process variable = Volume flow
• Second process variable = Totalizer 1
• Third process variable = OFF (not assigned)
• Fourth process variable = OFF (not assigned)
The variable assignment of the process variables 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
Custody transfer mode:
In custody transfer mode, the
device variable “Totalizer” is
locked.
This command set the unit of the given device varia-
bles. 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 60
!
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 displayed 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 preambles 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)