MVI56E-MNETCR ♦ ControlLogix Platform
Ladder Logic
Modbus TCP/IP Multi-Client Enhanced Communications Module for Remote Chassis
User Manual
ProSoft Technology, Inc.
Page 77 of 161
Notice that the
Data Type
column displays the data types used to declare each
controller tag, controller tag array or controller tag structure. Individual controller
tags are declared with basic data types, such as INT and BOOL. Controller tag
arrays are declared with arrays of basic data types. Controller tag structures are
declared with user-defined data types (UDTs).
3.2
User-Defined Data Types (UDTs)
User-defined data types (UDTs) allow users to organize collections of data types
into groupings. These groupings, or data type structures, can then be used to
declare the data types for controller tag structures. Another advantage of defining
a UDT is that it may be re-used in other controller tag structures that use the
same data types.
The Add-On Instruction Import Rung ladder logic for the module has pre-defined
UDTs. You can find them in the
User-Defined
subfolder, located in the
Data
Types
folder in the
Controller Organizer
pane of the main RSLogix window. Like
the controller tags, the UDTs are organized in a multiple-level tree structure.
3.2.1 MVI56(E)-MNETCR User-Defined Data Types
Ten different UDTs are defined for the MVI56(E)-MNETCR Add-On Instruction.
The main UDT,
MNETCRMODULEDEF
, contains all the data types for the
module and was used to create the main controller tag structure,
MNETCR
.
There are four UDTs one level below
MNETCRMODULEDEF
. These lower-level
UDTs were used to create the
MNETCR.DATA
,
MNETCR.CONTROL
,
MNETCR.STATUS
, and
MNETCR.UTIL
controller tag structures.
Click the
[+]
signs to expand the UDT structures and view lower-level UDTs.
Содержание MVI56E-MNETCR
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