Installation, Operation and Maintenance Manual
MDE 254 Rev. 1 March 2021
HART Command Set 41
Section 8: HART Command Set
8.4 Common Tables
Table 119. Expanded Device Type Codes
Expanded Device Code (Hex) Description Company Name
B77E HRT2000v4 Biffi
B705 HRTIMVS2000 Biffi
Code Description
32 Degrees Celsius
38 Hertz
39 Milliamperes
51 Seconds
57 Percent
58 Volts
251 None
Code Transfer Function Description
0 Linear
1 Square Root
2 Square Root Third Power
3 Square Root Fifth Power
4 Special Curve
5 Square
230 Discrete (Switch)
231 Square Root Plus Special Care
232 Square Root Third Power Plus Special Curve
233 Square Root Fifth Power Plus Special Curve
240 - 250 Not Used
251 None
252 Unknown
253 Special
Code Alarm Selection Description
0 High
1 Low
239 Hold Last Output Value
240 - 250 Not Used
251 None
252 Unknown
253 Special
NOTE: Other manufacturer devices are not listed.
Table 120. Engineering Unit Codes
NOTE: Only Unit Codes used by HRT2000v4 are listed.
Table 121. Transfer Function Codes
Table 122. Alarm Selection Codes