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Syntax

Data Type

Access

O:<word>

Short, Word, BCD

Read/Write

O:<word>/<bit>

Boolean

Read/Write

O/bit

Boolean

Read/Write

71

Allen-Bradley ControlLogix Ethernet Driver Help

Micrologix Model

Embedded I/O

Expansion I/O

1000

Slot 0

N/A

1100

Slot 0

Slots 1-4

1200

Slot 0

Slots 1-6

1400

Slot 0

Slots 1-7

1500

Slot 0

Slots 1-16

Micrologix models have two types of I/O: embedded I/O and expansion I/O (not applicable for Micrologix 1000). Embedded I/O resides with the CPU base unit while Expansion I/O plugs into the CPU base unit. The table below lists the I/O capabilities of each Micrologix model.

Micrologix Model

# Input Words

# Output Words

1000

2

1

1100

6

4

1200

4

4

1400

8

6

1500

4

4

The address syntax for Micrologix I/O references a zero-based word offset, not a slot. Users must determine the word offset to a particular slot. This requires knowledge of the modules and their respective size in words. The table below specifies the size of some available modules; however, it is recommended that users consult both the Micrologix documentation and the controller project to determine the module's true word size.

Micrologix Embedded I/O Word Sizes

Modules

# Input Words

# Output Words

1769-HSC

35

34

1769-IA8I

1

0

1769-IA16

1

0

1769-IF4

6

0

1769-IF4XOF2

8

2

1769-IF8

12

1

1769-IM12

1

0

1769-IQ16

1

0

1769-IQ6XOW4

1

1

1769-IQ16F

1

0

1769-IQ32

2

0

1769-IR6

8

0

1769-IT6

8

0

1769-OA8

0

1

1769-OA16

0

1

1769-OB8

0

1

1769-OB16

0

1

1769-OB16P

0

1

1769-OB32

0

2

1769-OF2

2

2

1769-OF8C

11

9

1769-OF8V

11

9

1769-OV16

0

1

1769-OW8

0

1

1769-OW16

0

1

1769-OW8I

0

1

Micrologix Expa

nsion I/O Word Sizes

www. kepware.com

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