Publication 1763-RM001C-EN-P - October 2009
20
I/O Configuration
• Ox = Over-range flag bits for channels 0 through 3. These bits are set when the
input signal is above the user-specified range. The module continues to
convert data to the maximum full range value during an over-range condition.
The bits reset when the over-range condition clears.
• UIx = Under-range flag bits for input channels 0 through 3. These bits are set
when the input signal is below the user-specified range. The module continues
to convert data to the maximum full range value during an under-range
condition. The bits reset when the under-range condition clears.
• SGNx = The sign bit for channels 0 through 3.
1762-OF4 Input Data File
For each module, slot x, words 0 and 1 contain the analog output module
status data for use in the control program.
The bits are defined as follows:
•
SOx = General status bits for output channels 0 through 3. This bit is
set when an error (over- or under-range) exists for that channel, or
there is a general module hardware error.
•
OOx = Over-range flag bits for output channels 0 through 3. These
bits indicate an input signal above the user range and can be used
in the control program for error detection. The module continues to
convert analog data to the maximum full range value while this bit is
set (1). The bit is reset (0) when the error clears.
•
UOx = Under-range flag bits for output channels 0 through 3. These
bits indicate an input signal below the user range. They can be used
in the control program for error detection. The module continues to
convert analog data to the minimum full range value while this bit is
set (1). The bit is reset (0) when the error clears.
1762-OF4 Input Data File
Wo
rd
Bit Position
15 14 13
12 11 10 9
8
7
6
5
4
3
2
1
0
0
Reserved
SO3 SO2 SO1 SO0
1
Reserved
UO0 OO0 UO1 OO1 UO2 OO2 UO3 OO3
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