Banner SureCross DX80 Wireless Networks - Manual (Page 30)

Output Scale Fullscale (range) Offset
0 to 10V 10V 0V
Fullscale. Defined in the table; the output range.
Span. The total range of values mapped to the output.
Null. The starting point for the output scale.
Input Value. The value mapped to the output.
Offset. Defined in the table; the starting output value.
Example: Temperature Map
Map a temperature input from a Node to a 4–20 mA output. The starting temperature is −20°F and the last temperature will be 50°F (4
mA = −20°F, 20 mA = 50°F). This defines the null as −20°F and the span as 70.
With an input temperature value of −5°F, the output value will be:
Output = (Fullscale ÷ Span)(InValue − Null) + Offset
(Fullscale ÷ Span) = 16 ÷ 70 = 0.22857
(Value − Null ) = −5 − (−20) = 15
Offset = 4
Output = 0.22857 × 15 + 4 = 7.42 mA
Example: Distance Map
Map a distance input from a Node to a 0–10V output. The starting distance is 200mm and the last distance will be 2000mm (4 mA =
200mm, 20 mA = 2000mm). This defines the null as 200 and the span as 1800.
With an input distance reading of 1560mm, the output value will be:
Output = (Fullscale ÷ Span)(InValue − Null) + Offset
(Fullscale ÷ Span) = 10 ÷ 1800 = 0.00555
(Value − Null ) = 1560 − 200 = 1360
Offset = 0
Output = 0.00555 × 1360 + 0 = 7.54V
Alarm Conditions
The standard alarm conditions are as follows:
Unsigned Alarm = 0xFFFF
Signed Alarm = 0x7FFF
If special alarm conditions are needed, consult the factory for details.
SureCross User Configuration Tool (UCT)
30 www.bannerengineering.com - tel: 763-544-3164 Rev. G