Endress+Hauser HART Proline Promass 83, Руководство по эксплуатации

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Operation Proline Promass 83
46 Hauser
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 mass flow
• Second process variable: Code 250 for totalizer 1
• Third process variable: Code 7 for density
• Fourth process variable: Code 9 for temperature
!
Note!
You can set the assignment of device variables to
process variables with Command 51.
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
→
40
Factory setting:
• Primary process variable = Mass flow
• Second process variable = Totalizer 1
• Third process variable = Density
• Fourth process variable = Temperature
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 data
→
40
!
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 to 20) As a response, the current number of the preambles
is displayed in the response message:
Byte 0: Number of preambles
95
(HART 7) Read device communication
statistics
Access type = read none The device communication statistics command
provides statistics about device communication
6 bytes follow by way of response
– Byte 0-1: Number of STX messages received by
the device
– Byte 2-3: Number of ACK messages sent by the
device
– Byte 4-6: Number of BACK messages sent by the
device
Command No.
HART command / Access type Command data
(numeric data in decimal form) Response data
(numeric data in decimal form)