Rievtech PR-12 Series, User Manual And Programmers Manual

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5.3.4 Program block
The program block contains three parts, namely, MAIN (main program), INT-1
(interrupt routine) and SBR-0 (subroutine). Check the interrupt program,
right click to add or delete interrupt program. Check the subroutine,
right click to add or delete subroutine. The main program can not be added
or deleted.
5.3.5 Function symbol
Double click the function symbol, the pop-up interface is as follows:
You can modify the symbols, addresses, and comments.
5.3.6 Variable symbol
Double click the variable symbol, the pop-up interface is as follows:
Symbol, address, data type, and comment can be set in variable symbol.