Panametrics HydroProII, User Manual

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Appendix A. HygroPro
II
HART
®
Field Device Specification
66 HygroPro
II
User's Manual
A.9.30 Command 171 (0xAB): Read Output Trim Zero
This command is to trim the zero or low endpoint value to a value of 4 mA.
For example, if the zero value is 4.1 mA, then the correction entered should be -0.1 mA to achieve a result of 4 mA.
Request Data Bytes
Response Data Bytes
Command-Specific Response Codes
A.9.31 Command 171 (0xAC): Read Output Trim Span
This command is to trim the zero or low endpoint value to a value of 20 mA.
For example, if the zero value is 20.1 mA, then the correction entered should be -0.1 mA to achieve a result of 20 mA.
Request Data Bytes
6 Error Device-Specific Command Error
7 Error In Write Protect Mode
8-15 Undefined
16 Error Access Restricted
8-127 Undefined
Byte Format Description
0
Byte Format Description
0 Unsigned-8 Enumeration. 0 = Fixed 4 mA trim, 1 = Live mA
Read for live analog output or fixed 4 mA for trim purposes
1~4 Float mA correction Value
Code Class Description
0 Success No Command-Specific Errors
1-4 Undefined
5 Error Too Few Data Bytes Received
6 Error Device-Specific Command Error
7 Error In Write Protect Mode
8-15 Undefined
16 Error Access Restricted
8-127 Undefined
Byte Format Description
0
Code Class Description