Panametrics HydroProII, User Manual

Page: 64 / 104

Appendix A. HygroPro
II
HART
®
Field Device Specification
52 HygroPro
II
User's Manual
A.9.5 Command 140 (0x8C): Read Primary Variable Range Values
This command is to read the PV range.
Request Data Bytes
Response Data Bytes
Command-Specific Response Codes
A.9.6 Command 144 (0x90): Set Loop Measurement Type
This command is to set the loop measurement type to 1 of 3 enumerations:
0 – 4-20 mA, 1 – NAMUR, 2 – Special Zero and Span Values
When the loop measurement type is set to Special, then the Special span value and special zero value will determine
the endpoint mA values instead of 4 mA and 20 mA.
Request Data Bytes
Response Data Bytes
32 Error Busy
33 ~ 127 Undefined
Byte Format Description
None
Byte Format Description
0 Unsigned-8 Upper and Lower Range Values Unit Class
1 Unsigned-8 Upper and Lower Range Values Unit Code
2 ~ 5 Float Upper Range Value
6 ~ 9 Float Lower Range Value
Code Class Description
0 Success No Command-Specific Errors
1 ~ 127 Undefined
Byte Format Description
0 Unsigned-8 Loop Measurement type
1~4 Float Special Zero Value
5~8 Float Special Span Value
Byte Format Description
0 Unsigned-8 Loop Measurement type
Code Class Description