Endress+Hauser PROline promass 80 Operating Instructions Manual page 38

5 Operation
Command No.
HART command / Access type
3 Read the primary process
variable as current in mA and
four (preset using Command
51) dynamic process
variables
Access type = read
6 Set HART shortform address
Access type = write
11 Read unique device
identification using the TAG
(measuring point
designation)
Access type = read
12 Read user message
Access type = read
38
Command data
(numeric data in decimal form)
none
Byte 0: desired address (0...15)
Factory setting:
0
!
Note!
With an address >0 (multidrop mode), the
current output of the primary process variable is
set to 4 mA.
Bytes 0-5: TAG
none
PROline Promass 80
Response data
(numeric data in decimal form)
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 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 = Mass flow
• Second 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".
Byte 0: active address
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, 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
Bytes 0-24: User message
!
Note!
You can write the user message using
Command 17.
Endress+Hauser