Table 8 - Hart Common Practice Commands - FCI MT100 Installation, Operation And Maintenance Manual

MT100 Multipoint Flow Meter
MT100 HART Common Practice Commands
The MT100 supports Common Practice commands 35, 40, 42, 44, 45, 46, 50 and 51.
Common Practice command set and the data associated with each command.
Command 35: Write Primary Variable (PV) Range Values
Request Data Bytes
Response Data Bytes
Response Codes
Note: 1. The value returned in the response data bytes reflects the rounded or truncated value actually used by the
device.
Command 40: Enter/Exit Fixed Current Mode
Request Data Bytes
Response Data Bytes
Response Codes
Notes: 1. Specify a value (in mA) to drive Ch. 1 to a particular output value. Specify "0" to exit the fixed current mode.
Command 42: Perform Device Reset (Soft Reset of Flow Meter)
Request Data Bytes
Response Data Bytes
Response Codes
Note: 1. Send Command 42 (no data) to reset the instrument. No response is returned due to reboot.
Fluid Components International LLC
Table 8 – HART Common Practice Commands
Byte Format
0 Unsigned-8
1–4 Float
5–8 Float
0 Unsigned-8
1
1–4 Float
5–8 Float
Code Class
0 Success
1–8
9 Error
10 Error
11 Error
12 Error
13–17 Error
18 Error
19–28
29 Error
30–127
Byte Format
0–3 Float
1
0–3 Float
Code Class
0 Success
1–2
3 Error
4 Error
5–10
11 Error
12–127
Byte Format
None
None
Code Class
None
Table 8 below summarizes the instrument's HART
Description
PV Upper and Lower Range Values Units Code
PV Upper Range Value (Customer Max. Flow Limit)
PV Lower Range Value (Customer Min. Flow Limit)
PV Upper and Lower Range Values Units Code
PV Upper Range Value
PV Lower Range Value
Description
No Command-Specific Errors
Undefined
Lower Range Value Too High
Lower Range Value Too Low
Upper Range Value Too High
Upper Range Value Too Low
Upper and Lower Range Values Out Of Limits
Invalid Units Code
Undefined
Invalid Span
Undefined
Description
PV Fixed Current Level (mA units); "0" to Exit Fixed Current
Actual PV Current Level
Description
No Command-Specific Errors
Undefined
Passed Parameter Too Large
Passed Parameter Too Small
Undefined
Loop Current Not Active (Device in Multidrop Mode)
Undefined
1
Description
Description
OPERATION
55