Endress+Hauser HART Proline Promass 80, Руководство по эксплуатации

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Proline Promass 80 Operation
Hauser 37
5.4.4 Universal / Common practice HART commands
The following table contains all the universal practice commands supported by the device.
Command No.
HART command / Access type Command data
(numeric data in decimal form) Response data
(numeric data in decimal form)
Universal Commands
0 Read unique device identifier
Access type = read none Device identification delivers information on the device
and the manufacturer. It cannot be changed.
The response consists of a 12-byte device ID:
– Byte 0: fixed value 254
– Byte 1: Manufacturer ID, 17 = E+H
– Byte 2: Device type ID, e.g. 81 = Promass 83
or 80 = Promass 80
– Byte 3: Number of preambles
– Byte 4: Universal commands rev. no.
– Byte 5: Device-specific commands rev. no.
– Byte 6: Software revision
– Byte 7: Hardware revision
– Byte 8: Additional device information
– Bytes 9-11: Device identification
1 Read primary process variable
Access type = read none – Byte 0: HART unit code of the primary process
variable
– Bytes 1-4: Primary process variable
Factory setting:
Primary process variable = Mass flow
!
Note!
• You can set the assignment of device variables to
process variables using Command 51.
• Manufacturer-specific units are represented using the
HART unit code "240".
2 Read the primary process variable as
current in mA and percentage of the
set measuring range
Access type = read none – Bytes 0-3: Current current of the primary process
variable in mA
– Bytes 4-7: Percentage of the set measuring range
Factory setting:
Primary process variable = Mass flow
!
Note!
You can set the assignment of device variables to process
variables using Command 51.
3 Read the primary process variable as
current in mA and four (preset
using Command 51) dynamic
process variables
Access type = read none 24 bytes are sent as a response:
– Bytes 0-3: Primary process variable current in mA
– Byte 4: HART unit code of the primary process
variable
– Bytes 5-8: Primary process variable
– Byte 9: HART unit code of the secondary process
variable
– Bytes 10-13: Secondary process variable
– Byte 14: HART unit code of the third process variable
– Bytes 15-18: Third process variable
– Byte 19: HART unit code of the fourth process
variable
– Bytes 20-23: Fourth process variable
Factory setting:
• Primary process variable = Mass flow
• Secondary process variable = Totalizer 1
• Third process variable = Density
• Fourth process variable = Temperature
!
Note!
• You can set the assignment of device variables to
process variables using Command 51.
• Manufacturer-specific units are represented using the
HART unit code "240".