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HART Communications
4.3 Device Specific HART Commands
F US Clamp-on Communications Protocol Manual
44
Hardware Installation Manual, 11/2015, A5E34981613-AC
Table 4- 27 Command 45 - Trim Loop Current Zero
Description
Byte
Format
Comments/Value
Measured Loop Current (milliamperes)
0-3
Float
<used with CMD 40 to trim 4>
Table 4- 28 Command 46 - Trim Loop Current Gain
Description
Byte
Format
Comments/Value
Measured Loop Current (milliamperes)
0-3
Float
<used with CMD 40 to trim 20>
Table 4- 29 Command 50 - Read Dynamic Variable Assignments
Description
Byte
Format
Comments/Value
Primary Variable
0
U-8
<HART Device Variable Num-
ber>
Secondary Variable
0
U-8
<HART Device Variable Num-
ber>
Tertiary Variable
0
U-8
<HART Device Variable Num-
ber>
Quaternary Variable
0
U-8
<HART Device Variable Num-
ber>
Table 4- 30 Command 51 - Write Dynamic Variable Assignments
Description
Byte
Format
Comments/Value
Primary Variable
0
U-8
<HART Device Variable Num-
ber>
Secondary Variable
0
U-8
<HART Device Variable Num-
ber>
Tertiary Variable
0
U-8
<HART Device Variable Num-
ber>
Quaternary Variable
0
U-8
<HART Device Variable Num-
ber>
Table 4- 31 Command 53 - Write Device Variable Units
Description
Byte
Format
Comments/Value
Device Variable Code
0
U-8
<HART Device Variable Num-
ber>
Device Variable Units Code
1
U-8
<common tables>