Emerson Rosemount 648 Reference Manual page 71

Reference Manual
00809-0200-4648
B.2 Mapping of device variable index numbers
To integrate a device into the host system, it may be necessary to know what each device
variable represents, and what index number it has been assigned to. The variable index
number is an arbitrary number used to uniquely identify each variable supported in the
field device.
Table B-3
Rosemount 648 Wireless.
Table B-3: Device Variable Index
Device variable index
0
1
2
3
244
Table B-4: Variable Mapping
Process variable
PV
SV
TV
QV
Rosemount 648 Wireless
Mapping for Non-DD Based Integration with Host Systems
to Table B-4 displays the device variable and variable mapping indexes for the
Description
Supply Voltage
Electronics Temperature
Process Temperature
Terminal Temperature (for CJC)
Percent of Range
Mapped variable index
2 - Process Temperature
3 - Terminal Temperature
1 - Electronics Temperatrue
0 - Supply Voltage
May 2020
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