Assigning Variables to a Function Block
Now complete the POU by assigning variables to your Function Blocks as shown below:
NOTES Mitsubishi addresses or symbolic declarations may be used. However, if Mitsubishi
‘MELSEC’ direct addresses are used then the program will no longer adhere to the IEC con-
ventions.
Designating the variable “TRUE” as above, automatically assigns a ‘normally on’ contact
(Special relay M8000 in MELSEC FX series) which is neater and conforms to IEC
conventions.
The STAR_DELTA FB can be used many times in the project and must use different Instance
names.
Creating a New Task:
햲
Create a new Task “MAIN” in the task pool:
6-18 MITSUBISHI ELECTRIC
Functions and Function Blocks Creating a Function Block
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