4-8
Chapter 4: Using Your Input Module
Section 4.4
Monitoring Each
Input Channel
Section 4.5
Checking Each Input
Channel's Configuration
and Status
User's Manual Pub. 0300128-04 Rev. A
The input signal data resides in words 0 through 3 of the input image file
(addresses I:e.0 through I:e.3). The values present depend on the input types and
data formats selected. When an input channel is disabled, its data word is set to
zero.
Words 4 through 7 of the input image file (addresses I:e.4 through I:e.7) reflect
the configuration and status of each channel. Use the data provided in these status
words to determine if the configuration data for any channel is valid.
Whenever a channel is disabled, its status word is set to zero. This condition tells
you that input data in the data word for that channel is not valid and should be
ignored.
A detailed explanation appears in Table 4-3.
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