Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules - Manual (Page 125)

Publication 1794-6.5.8 - January 2010
Calibrating Your Module 123
5. Send another BTW to the module to reset the CK bit (0). When
the GO bit is low, the previously determined offset coefficients
are stored in EEPROM for the selected channels. If QK is set (1)
high, the same coefficients will be stored to all “like”
configurations (i.e. if configuration bits are set for a specific
voltage, both unipolar/bipolar, x1/x2 – will have the same
coefficients stored – see Table 7.1). If calibrate for 0-20mA
current range, 4-20mA range channels are also automatically
calibrated.
6. Monitor the module block transfer read word. Clear the IC bit to
0, and offset calibration is terminated.
Table 7.1
Configuration Nominal Range Data Type Comments
4 0–20mA signed 2’s complement
% If you calibrate any of
this group, the rest of
the group will also be
calibrated.
8 0–20mA binary
C ±20mA offset binary
6 0–10V signed 2’s complement
% If you calibrate any of
this group, the rest of
the group will also be
calibrated.
A 0–10V binary
B 0–5V binary
2 ±10V signed 2’s complement If you calibrate any of
this group, the rest of
the group will also be
calibrated.
7 ±10V signed 2’s complement
%
E ±10V offset binary
3 ±5V signed 2’s complement If you calibrate any of
this group, the rest of
the group will also be
calibrated.
F ±5V offset binary
1 4–20mA signed 2’s complement If you calibrate 0-20mA
range, all 4- mA g s are
calibrated.
5 4-20mA signed 2’s complement
%
9 4–20mA binary
D 4–20mA offset binary