MicroLogix 1200 Analog Output Module 13
Publication 1762-IN016B-EN-P - December 2005
I/O Memory Mapping
The addressing scheme for 1762-OF4 is shown below.
(1) I/O located on the controller (embedded I/O) is slot 0. I/O added to the controller (expansion I/O) begins with slot 1.
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.
Word
Bit Position
1514131211109876543210
0 Reserved SO3 SO2 SO1 SO0
1 Reserved UO0 OO0 UO1 OO1 UO2 OO2 UO3 OO3
O0:x.0/0
Output (O) File
Output Data File (0)
Slot Number
(1)
Word
Bit
Bit Delimiter
Word Delimiter
Slot Delimiter
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