Specifications

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Allen-Bradley ControlLogix Ethernet Driver Help

Float Array*

Array w/ Offset Boolean Array 1. The Controller tag must be a one-

dimensional array.

2. The offset must lie on 32-bit boundary.

3. The number of elements must be a factor of

Bit Boolean 1. The Controller tag must be a one-

dimensional array.

2. The range is limited from 0 to 31.

String String Not supported.

*The float value equals the face value of the Controller tag in float form (non-IEEE floating-point number).

Examples

Examples highlighted in yellow signify common use cases.

BOOL Controller Tag - booltag = true

Server Tag Address Format Data Type Notes

booltag Standard Boolean Value = true

booltag Standard Byte Value = 1

booltag Standard Word Value = 1

booltag Standard DWord Value = 1

booltag Standard Float Value = 1.0

booltag [3] Array Element Boolean Invalid: Tag not an array.

booltag [3] Array Element Word Invalid: Tag not an array.

booltag {1} Array w/o Offset Word Invalid: Not supported.

booltag {1} Array w/o Offset Boolean Invalid: Not supported.

booltag [3] {32} Array w/ Offset Boolean Invalid: Tag not an array.

booltag . 3 Bit Boolean Invalid: Tag not an array.

booltag / 1 String String Invalid: Not supported.

booltag / 4 String String Invalid: Not supported.

BOOL Array Controller Tag - bitarraytag = [0,1,0,1]

Server Tag Address Format Data Type Notes

bitarraytag Standard Boolean Invalid: Tag cannot be an array.

bitarraytag Standard Byte Invalid: Tag cannot be an array.

bitarraytag Standard Word Invalid: Tag cannot be an array.

bitarraytag Standard DWord Invalid: Tag cannot be an array.

bitarraytag Standard Float Invalid: Tag cannot be an array.

bitarraytag [3] Array Element Boolean Value = true

bitarraytag [3] Array Element Word Invalid: Bad data type.

bitarraytag {3} Array w/o Offset Word Invalid: Tag cannot be an array.

bitarraytag {1} Array w/o Offset Word Invalid: Tag cannot be an array.

bitarraytag {1} Array w/o Offset Boolean Invalid: Array size must be a factor of 8.

bitarraytag {32} Array w/o Offset Boolean Value = [0,1,0,1,...]

bitarraytag [3] {32} Array w/ Offset Boolean Offset must begin on 32-bit boundary.

bitarraytag[0]{32} Array w/ Offset Boolean Value = [0,1,0,1,...]

bitarraytag[32]{64} Array w/ Offset Boolean Value = [...] values not provided above

bitarraytag . 3 Bit Boolean Value = true

bitarraytag / 1 String String Invalid: Not supported.

bitarraytag / 4 String String Invalid: Not supported.

Advanced Addressing: SINT

Format

Supported

Data Types

Notes