Introduction
The purpose of this article is to show how easy it is to create a Data Structure in the CJ2 PLC for the use with an HMI.
In this example the CJ1W-MCH72 (Motion Controller) unit is being used for Data Structure and for HMI an NS5. For the Structure only the (CIO) data of the MCH72 is used. The HMI Structure can be expanding with internal Program Variables. For example Data Exchange with the MCH72 etc.
The Article shows how to create a Data Structure in a few steps.
1. Allocation Settings
Set the Automatic Memory Allocation (STRUCT)
2. Unit Structure
Create or Import a Structure for the Unit
Common:
Commands:
Information:
3. HMI Structure
Create or Import a Structure for the HMI
Commands:
Information:
4. Unit Address
Verify the Unit address from the I/O table
5. Symbols
Create a Symbol and assign the Structure (COMMON) to the Unit address
Create the HMI Structure and assign the Publication Net.Variable
6. Function Block
Create a Structure Text Function Block and Link the HMI Structure to the Data Structure
7. CX-Designer
Select and COPY the HMI Net.Variable Symbols (CTRL+C) from the CX-Programmer file...
And PASTE (CTRL+V) them into the Symbol Table of the CX-Designer file
PLC: CJ2M-CPU33, CJ1W-MCH72, HMI/NS: NS5-TQ11B-V2
All the files that are used for this example are attached.
