Specifications

Allen-Bradley ControlLogix Ethernet Driver Help
Array
w/o
Offset
Byte Array, Char
Array**
Word Array,
Short Array, BCD
Array***
DWord Array,
Long Array,
LBCD Array
Float Array ****
If accessing more than a single element, the Controller tag must be an array.
Array w/
Offset
Byte Array, Char
Array**
Word Array,
Short Array, BCD
Array***
DWord Array,
Long Array,
LBCD Array
Float Array ****
The Controller tag must be an array.
Bit Boolean 1. The range is limited from 0 to 31.
2. If Controller tag is an array, bit class reference must be prefixed by an
array element class reference. Example: tag_1 [2,2,3].0.
String String 1. If accessing a single element, the Controller tag need not be an array.
Note: The value of the string is the ASCII equivalent of the DINT value
(clamped to 255). Example: SINT = 65dec = "A".
2. If accessing more than a single element, the Controller tag must be an
array. The value of the string is the null-terminated ASCII equivalent
of all the DINTs (clamped to 255) in the string.
1 character in string = 1 DINT, clamped to 255
Note: DINT strings are not packed. For greater efficiency, use SINT
strings or the STRING structure instead.
*non-zero values are clamped to true.
**Values exceeding 255 are clamped to 255.
***Values exceeding 65535 are clamped to 65535.
****Float value equals the face value of Controller tag in float form (non-IEEE floating-point number).
Examples
Examples highlighted in yellow signify common use cases.
DINT Controller Tag - dinttag = 70000 (decimal)
Server Tag
Address
Format Data
Type
Notes
dinttag Standard Boolean Value = true
dinttag Standard Byte Value = 255
dinttag Standard Word Value = 65535
dinttag Standard DWord Value = 70000
dinttag Standard Float Value = 70000.0
dinttag [3] Array Element Boolean Invalid: Tag not an array. Boolean is invalid.
dinttag [3] Array Element DWord Invalid: Tag not an array.
dinttag {3} Array w/o
Offset
DWord Invalid: Tag not an array.
dinttag {1} Array w/o
Offset
DWord Value = [70000]
dinttag {1} Array w/o
Offset
Boolean Invalid: Bad data type
dintag [3] {1} Array w/ Offset DWord Invalid: Tag not an array.
dinttag . 3 Bit Boolean Value = false
www. kepware.com
66