Endress+Hauser Proline Promag 50 - Page 68

5 Operation PROline Promag 50
68 Endress+Hauser
3 Read the primary process
variable as current in mA and
four (preset using Command
51) dynamic process varia-
bles
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 proc-
ess variable
– Bytes 5-8: Primary process variable
– Byte 9: HART unit code of the second
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
• Second process variable = Totalizer 1
• Third process variable = not assigned
• Fourth process variable = not assigned
! Note!
• You can set the assignment of device varia-
bles to process variables using Command
51.
• Manufacturer-specific units are represented
using the HART unit code “240”.
6 Set HART shortform address
Access type = write
Byte 0: desired address (0...15)
Factory setting:
0
! Note!
With an address >0 (multidrop mode), the cur-
rent output of the primary process variable is
set to 4 mA.
Byte 0: active address
11 Read unique device identifi-
cation using the TAG (meas-
uring point designation)
Access type = read
Bytes 0-5: TAG Device identification delivers information on the
device and the manufacturer. It cannot be
changed.
The response consists of a 12 byte device ID if
the given TAG agrees with the one saved in the
device:
– Byte 0: fixed value 254
– Byte 1: Manufacturer ID, 17 = E+H
– Byte 2: Device type ID, 65 = Promag 50
– 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
12 Read user message
Access type = read
none Bytes 0-24: User message
! Note!
You can write the user message using
Command 17.
Command No.
HART command / Access type
Command data
(numeric data in decimal form)
Response data
(numeric data in decimal form)