Flowserve MX HART Field Unit - Manual (Page 21)

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MX/QX HART Field Unit FCD LMENIM2340-00 – 1/14
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3.4.2 Device Variable Mapping
Device Variables may be mapped to the Dynamic Variables according to the following table:
Table 3.6 – Mapping of Device Variables to Dynamic Variables
Variable
Code
Dynamic
Variable
Direction Default Device Variable
Device Variables which may be mapped to the
Dynamic Variable
0 PV input Position Setpoint Position Setpoint
1 SV output Current Position Current Position or Torque
2 TV output Motor Temperature
Current Position, Torque, Motor Temperature or
Compartment temperature
3 QV output Compartment Temperature
Current Position, Torque, Motor Temperature or
Compartment temperature
No single Device Variable may be mapped to more than one Dynamic Variable.
For Example:
Valid Mapping: Invalid Mapping:
PV = DV0 PV = DV0
SV = DV1 SV = DV1
TV = DV3 TV = DV1
QV = DV4 QV = DV4
If you try to map two Dynamic Variables to the same Device Variable, the command will return response code 2 “invalid
selection”. The Device Variables may be mapped from the DD menu Device Setup->Wired HART Board->Configuration->
Device Variable Mapping as follows:
Figure 3.1 – Device Variable Mapping Setup
3.4.3 Device Variable Units
Device Variables 0, 1, and 2 have fixed units that may not be changed. Device Variables 3 and 4 have units that may be
interchanged between °C and °F the default is °F. For Device Variables 3 and 4, the units may be changed from the DD menu
Process Variables->Wired HART Board as follows: