AB Quality ALLEN-BRADLEY 1791 User Manual page 59

Analog block i/o input/output modules
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Chapter 7
Module Calibration
Word/Bit
0
1
2
3
Word/Bit
0
1
2
3
7-4
Table 7.E
Discrete Transfer Input Data File
Description
Corrected Input Channel 0 Data
Corrected Input Channel 1 Data
Corrected Input Channel 2 Data
Corrected Input Channel 3 Data
Table 7.F
Discrete Transfer Input Bit/Word Descriptions
Description
Corrected Input Data for Channel 0 using most recent calibration data.
Corrected Input Data for Channel 1 using most recent calibration data.
Corrected Input Data for Channel 2 using most recent calibration data.
Corrected Input Data for Channel 3 using most recent calibration data.
Calibrating Voltage Inputs
Use the procedure below to calibrate the voltage inputs on your analog
block I/O module. The procedure can be used for either PLC or SLC
systems.
You can calibrate any single input or output individually or, you can
calibrate them simultaneously.
Important: To allow the module to stabilize, energize the module for at
least 30 minutes before calibrating.
To calibrate your module:
1.
Connect your test equipment for the input you want to calibrate. This
is shown in the figure below.
0-10V Reference Source
V
V
R
V
IN
I
IN
RET
GND

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