Endress+Hauser CNGmass DCI, Руководство по эксплуатации

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Operation CNGmass DCI
32 Hauser
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 = Mass flow
!
Note!
You can set the assignment of device variables to process variables
using Command "51".
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 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
11 Read unique device identification
using the TAG (measuring 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 measuring device:
– Byte 0: Fixed value 254
– Byte 1: Manufacturer ID, 17 = Hauser
– Byte 2: Device type ID, 85 = CNGmass DCI
– Byte 3: Number of preambles
– Byte 4: Universal commands rev. no.
– Byte 5: Device-spec. commands rev. no.
– Byte 6: Software revision
– Byte 7: Hardware revision
– Byte 8: Additional device information
– Byte 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".
Universal Commands
Command No.
HART command / Access type Command data
(numeric data in decimal form) Response data
(numeric data in decimal form)