Specifications

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Allen-Bradley ControlLogix Ethernet Driver Help

Control Files

Integer Files

Float Files

ASCII Files

String Files

BCD Files

PID Files

Message Files

Block Transfer Files

PLC-5 Series Addressing for Ethernet/IP Gateway

For more information on file-specific addressing, select a link from the list below.

Output Files

Input Files

Status Files

Binary Files

Timer Files

Counter Files

Control Files

Integer Files

Float Files

ASCII Files

String Files

BCD Files

PID Files

Message Files

Block Transfer Files

PLC-5 Series Addressing for ENI

For more information on file-specific addressing, select a link from the list below.

Output Files

Input Files

Status Files

Binary Files

Timer Files

Counter Files

Control Files

Integer Files

Float Files

ASCII Files

String Files

BCD Files

PID Files

Message Files

Block Transfer Files

Logix Tag-Based Addressing

Rockwell Automation's Integrated Architecture uses a tag or symbol-based addressing structure that is

commonly referred to as Logix tags (or Native tags). These tags differ from conventional PLC data items in that

the tag name itself is the address, not a physical or logical address.

Note: Throughout this help file, Logix tags are assumed to be global in nature unless specified otherwise.

The Allen-Bradley ControlLogix Ethernet Driver allows users to access the controller's atomic data types: BOOL,

SINT, INT, DINT, LINT, and REAL. Although some of the pre-defined types are structures, they are ultimately

based on these atomic data types. Thus, all non-structure (atomic) members of a structure are accessible. For

example, a TIMER cannot be assigned to a server tag but an atomic member of the TIMER can be assigned to the

tag (such as TIMER.EN, TIMER.ACC, and so forth). If a structure member is a structure itself, both structures

would have to be expanded to access an atomic member of the substructure. This is more common with user and

module-defined types and is not found in any of the pre-defined types.