ProSoft Technology MVI69L-MBTCP - Manual (Page 76)

Using Controller Tags MVI69L-MBTCP ♦ CompactLogix Platform
User Manual Communication Module
Page 76 of 152 ProSoft Technology, Inc.
January 6, 2014
5.1 Controller Tags
Data related to the MVI69L-MBTCP is stored in the ladder logic in variables
called controller tags. Individual controller tags can be grouped into collections of
controller tags called controller tag structures. A controller tag structure can
contain any combination of:
 Individual controller tags
 Controller tag arrays
 Lower-level controller tag structures
The controller tags for the module are pre-programmed into the Add-On
Instruction Import Rung ladder logic. You can find them in the Controller Tags
subfolder, located in the Controller folder in the Controller Organizer pane of the
main RSLogix 5000 window.
This controller tag structure is arranged as a tree structure. Individual controller
tags are found at the lowest level of the tree structure. Each individual controller
tag is defined to hold data of a specific type, such as integer or floating-point
data. Controller tag structures are declared with user-defined data types, which
are collections of data types.
5.1.1 MVI69L-MBTCP Controller Tags
The main controller tag structure, MBTCP, is broken down into five lower-level
controller tag structures.
The five lower-level controller tag structures contain other controller tags and
controller tag structures. Click the [+] sign next to any controller tag structure to
expand it and view the next level in the structure.
For example, if you expand the MBTCP.DATA controller tag structure, you will
see that it contains two controller tag arrays, MBTCP.DATA.ReadData and
MBTCP.DATA.WriteData, which are 240-element integer arrays.