Endress+Hauser Proline Promag 50, Руководство по эксплуатации

Страница: 67 / 122

Promag 50 Operation
Hauser 67
44 Write unit of primary process
variable
Access = write Set unit of primary process variable. Only units 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 a direct 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: see table

ä
68
50 Read assignment of the device
variables to the four process
variables
Access = read none Display of the current variable assignment of the 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
Factory setting:
• Primary process variable: Code 1 for volume flow
• Second process variable: Code 250 for totalizer
• Third process variable: Code 0 for OFF (not assigned)
• Fourth process variable: Code 0 for OFF (not assigned)
51 Write assignment 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
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 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
information

ä
63
!
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 a direct 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 (4 to 20) The current number of preambles is displayed in the response
telegram: 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)