Hart Commands - Endress+Hauser Proline Prosonic Flow 91 Operating Instructions Manual

Proline Prosonic Flow 91
Command No.
HART command / Access type
Universal Commands
0 Read unique device identifier
Access type = Read
1 Read primary process variable
Access type = Read
2 Read the primary process variable
as current in mA and percentage
of the set measuring range
Access type = Read
3 Read the primary process variable
as current in mA and four (preset
using Command 51) dynamic
process variables
Access type = Read
Endress+Hauser
5.3.4 Universal / common practice HART commands
The following table contains all the universal commands supported by the device.
Command data
(numeric data in decimal form)
none
none
none
none
Response data
(numeric data in decimal form)
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, 98 = Prosonic Flow 91
– 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
– Byte 9-11: device identification
– Byte 0: HART unit code of the primary process
variable
– Bytes 1-4: primary process variable
Factory setting: primary process variable = Volume flow
!
Note!
• You can set or change the assignment of device
variables to process variables using Command 51.
• Manufacturer-specific units are represented using
the HART unit code "240".
– Byte 0-3: current current of the primary process
variable in mA
– Byte 4-7: %- value of the set measuring range
Factory setting: primary process variable = Volume flow
!
Note!
You can set or change the assignment of device
variables to process variables using Command 51.
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: second 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 = Volume flow
• Secondary process variable = Totalizer
• Third process variable = Sound velocity
• Fourth process variable = Flow velocity
!
Note!
• Manufacturer-specific units are represented using
the HART unit code "240".
Operation
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