ProSoft MVI69E-MBS - Using Controller Tags; Controller Tags

MVI69E-MBS ♦ CompactLogix Platform Using Controller Tags
Modbus Serial Enhanced Communication Module User Manual
ProSoft Technology, Inc. Page 75 of 154
June 28, 2017
5 Using Controller Tags
In This Chapter
 Controller Tags ...................................................................................... 75
 User-Defined Data Types (UDTs) ......................................................... 77
 MBS Controller Tag Overview ............................................................... 79
Controller tags are a feature of the RSLogix software and are part of the MVI69E-
MBS Add-On Instruction. Refer to the section Adding the Module to RSLogix
(page 17) for information on importing the Add-On Instruction into RSLogix.
5.1 Controller Tags
Data related to the MVI69E-MBS is stored in the ladder logic in variables called
controller tags. You use controller tags to manage communication between the
MVI69E-MBS module and the CompactLogix or MicroLogix 1500-LRP processor:
 View the read and write data being transferred between the module and the
processor.
 View status data for the module.
 Set up and trigger special functions.
 Initiate module restarts (Warm Boot or Cold Boot).
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 are included in the MVI69E-MBS Add-On Instruction ladder
logic. After you import the Add-On Instruction, you can find the controller tags 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.
The Add-On Instruction also includes user-defined data types (UDTs). UDTs are
collections of data types and declares the data types for the controller tag
structures.
The MVI69E-MBS Add-On Instruction is extensively commented to provide
information on the purpose and function of each user-defined data type and
controller tag. For most applications, the Add-On Instruction works without
needing any modification.