Endress+Hauser Proline Promag 51, Руководство по эксплуатации

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Proline Promag 51 5 Operation
Hauser 61
5.4.4 Universal / Common practice HART commands
The following table contains all the universal and common practice commands supported by
Promag 51.
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, 67 = Promag 51
– 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 = Volume 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: actual current of the primary process
variable in mA
– Bytes 4–7: Percentage of the set measuring range
Factory setting:
Primary process variable = Volume flow
!
Note!
You can set the assignment of device variables to
process variables using Command 51.