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1762-OF4

2

4

1762-OX6I

0

1

75

Allen-Bradley ControlLogix Ethernet Driver Help

Calculation Input Word Offset for Slot x = # Input Words in Slot 0 through Slot (x-1).

Syntax

Data Type

Access

I:<slot>

Short, Word, BCD

Read Only

I:<slot>.<word>

Short, Word, BCD

Read Only

I:<slot>/<bit>

Boolean

Read Only

I:<slot>.<word>/<bit>

Boolean

Read Only

Note 1: The Embedded I/O needs to be taken into account when offsetting to Expansion I/O.

Note 2: The number of Output words does not factor into the calculation for Input Word Offset.

I/O Example

Let Slot 0 = Micrologix 1500 LRP Series C = 4 Input Words Slot 1 = 1769-OF2 = 2 Input Words Slot 2 = 1769-OW8 = 0 Input Word

Slot 3 = 1769-IA16 = 1 Input Word Slot 4 = 1769-OF8V = 11 Input Word Bit 5 of Slot 3 = 4 + 2 = 6 words = I:6/5

SLC 500 Syntax

Min Slot

Max Slot

Max Word

NA

NA

2047

NA

NA

1

1

30

*

NA

NA

277 (octal)

Ranges PLC Model Micrologix SLC 500 Fixed I/O SLC 500 Modular I/O PLC-5 Series

*The number of Input or Output words available for each I/O module can be found in the SLC 500 Modular I/O Selection Guide. For slot configuration help, refer to Device Setup.

Examples

Micrologix

Description

I:0

Word 0

I/2

Bit 2

I:1/5

Bit 5 word 1

SLC 500 Fixed I/O I:0 I:1 I/16 I:1/0

Description Word 0 Word 1 bit 16 Bit 0 word 1 (same as I/16)

PLC5* I:0 I:10 I/20 I:1/0

Description Word 0 Word 8 (10 octal = 8 decimal) Bit 16 (20 octal = 16 decimal) Bit 0 word 1 (same as I/20)

*Addresses are in Octal.

SLC 500 Modular I/O I:1 I:1.0

Description Word 0 slot 1 Word 0 slot 1 (same as I:1)

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