Endress+Hauser HART Proline Promass 83, Руководство по эксплуатации

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Operation Proline Promass 83
42 Hauser
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 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".
6
(HART 5) Set HART shortform address
Access type = write Byte 0: desired address (0 to 15)
Factory setting:
0
!
Note!
With an address >0 (multidrop mode), the current
output of the primary process variable is set to 4
mA.
Byte 0: active address
6
(HART 7) Set HART address and loop
current mode
Access type = write Byte 0: Desired address (0 to 63)
Factory setting:
0
!
Note!
With an address >0 (multidrop mode), the current
output of the primary process variable is fixed at 4
mA..
Byte 0: Active address
Byte 1: Loop current mode
9
(HART 7) Write long HART tag name
Access type = write none This command allows a master (PLC) to request the
value and status of up to four devices or dynamic
variables..
Number of device
variables
requested
Number of
data bytes
requested
Number of
data bytes in
response
1 1 9
2 2 17
3 3 25
4 4 33
Command No.
HART command / Access type Command data
(numeric data in decimal form) Response data
(numeric data in decimal form)