4 - 8 WBPEEUI240766B0
Field Calibration
Resistance Source
• 5.0 ohms to 500 ohms range with an accuracy of "25 mil-
liohms (or
"0.005 percent of specified range).
Individual Channel Calibration
This section provides field calibration procedures for low level,
high level, and resistance. To calibrate each channel in the
module:
1. Configure the point in the system.
2. Disable the channel.
3. Calibrate the channel with two calibration points.
4. Enable the channel.
This example shows the values to tune the FC 217 specifica-
tions for a low level voltage range calibration for channel one
on the ASI module referenced by the FC 215 at block address
100. S4 of FC 216 must also be set to any of the thermocouple
or millivolt types.
This example shows the values to tune the specifications to in
order to reset the channel field calibration data to the original
factory settings for an ASI module at address one. This is
needed only if the field calibration is unsuccessful.
Function
FC 217 Specifications
S1 S2 S3 S4 S5 S6
Disable point 1 100 1 x
1
x
1
x
1
Point calibration
2
21001 0valuex
1
Enable point 3 100 1 x
1
x
1
x
1
NOTES:
1. x is a do not care value.
2. Repeat this entry at least 2 times making specification 5 equal to the low voltage value applied
to the input terminals. For maximum accuracy, up to 11 points may be identified for adjustment of
input channel nonlinearities, resulting in 10 linear segments for correction.
Function
FC 217 Specifications
S1 S2 S3 S4 S5 S6
Reset factory
calibration
11 100 x
1
x
1
x
1
x
1
NOTE:
1. x is a do not care value. It may be left at the previous value.
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