Johnson Controls XP-910x - Manual (Page 11)

Configuration Guides—XT-9100 Configuration Guide 11
Via the SX Tool
The input type for the eight possible inputs (n = 1 to 8) can be configured
in Item AITn (RI.88, RI.96, RI.104, RI.112, RI.120, RI.128, RI.136, and
RI.144).
The unit of each analog input can be selected with following bits: (For
RTD inputs, Celsius or Fahrenheit must be selected.)
X4 X3 X2 X1 = 0000 No Units
X4 X3 X2 X1 = 0001 Celsius
X4 X3 X2 X1 = 0010 Fahrenheit
X4 X3 X2 X1 = 0011 Percent
Changing individual temperature units for each AI can only be done in the
SX Tool.
This function allows the linearization of the differential pressure signal
from a 0-10 VDC or 0/4 - 20 mA active sensor; the function is effective
over the selected range:
AI = sqrt(PR%/100) * (HR - LR) + LR
Where %PR = the Analog Value in % of the physical input range;
HR = High Range Value; and LR = Low Range Value.
Via the GX Tool (Option Only Available with Active Sensor)
Select XTn, AIn, and Data. At the “Square Root” field, enter “0” for No,
or “1” for Yes (to enable the square root calculation).
Via the SX Tool (Option Only Available with Active Sensor)
Select Item AITn.
X5 = 1 Enable Square Root of Input
X5 = 0 Disable Square Root of Input
AI Input Type:
Enable Square
Root