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Allen-Bradley ControlLogix Ethernet Driver Help

Syntax N<file>:<word> N<file>:<word> [rows][cols] N<file>:<word> [cols] N<file>:<word>/<bit> N<file>/bit

Data Type Short, Word, BCD, DWord, Long, LBCD Short, Word, BCD, DWord, Long, LBCD (array type) Short, Word, BCD, DWord, Long, LBCD (array type) Boolean Boolean

Access Read/Write Read/Write Read/Write Read/Write Read/Write

PLC Model

File Number

Max Word

Micrologix

7, 9-999

999

SLC 500 Fixed I/O

7, 9-255

255

SLC 500 Modular I/O

7, 9-999

999

PLC-5 Series

3-999

1999

The number of array elements (in bytes) cannot exceed the block request size specified. This means that array size cannot exceed 16 words given a block request size of 32 bytes.

Ranges

The maximum word location is one less when accessing as a 32 bit data type (such as Long, DWord, or Long BCD).

Examples Example N7:0 N7/26 N12:4/15 N7:10 [8] N15:0 [4] [5]

Description Word 0 Bit 26 Bit 15 word 4 8 element array starting at word 10 4 by 5 element array starting at word 0

Float Files To access float files, specify a file number and an element. The default data types are shown in bold.

Syntax F<file>:<element> F<file>:<element> [rows][cols] F<file>:<element> [cols]

Data Type

Access

Float

Read/Write

Float (array type)

Read/Write

Float (array type)

Read/Write

PLC Model

File Number

Max Word

Micrologix

8-999

999

SLC 500 Fixed I/O

NA

NA

SLC 500 Modular I/O

8-999

999

PLC-5 Series

3-999

1999

The number of array elements (in bytes) cannot exceed the block request size specified. This means that array size cannot exceed 8 Floats given a block request size of 32 bytes.

Ranges

Examples Example F8:0 F8:10 [16] F15:0 [4] [4]

Description Float 0 16 element array starting at word 10 16 element array starting at word 0

ASCII Files

To access ASCII file data, specify a file number and a character location. The default data types are shown in bold.

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