I/o memory mapping, Output data file, Addressing – Rockwell Automation 1762-OW8 MICROLOGIX RELAY OUTPUT MODULE User Manual

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MicroLogix 1762-OW8 Relay Output Module

Publication 1762-IN003B-EN-P - June 2013

I/O Memory Mapping

Output Data File

For each output module, the output data file contains the controller-directed state of the discrete
output points. Bit positions 0…7 correspond to output terminals 0…7.

w = write only, 0 = always at a 0 or OFF state

Addressing

The addressing scheme for 1762 Expansion I/O 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.

Wo

rd

Bit Position

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

0

0

0

0

0

0

0

0

0

w

w

w

w

w

w

w

w

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Output

Data File

Slot Number

(1)

Word (always zero for this module)

Bit (0 - 7)

Bit Delimiter

Word Delimiter

Slot Delimiter

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