Memory For Non-Volatile Application Program Variables - Jetter JetControl 365MC User Manual

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8.2.6 Memory for non-volatile application program variables

Properties
Types of access
JetSym STX
Program
Setup pane
User Manual – JetControl 365MC
Non-volatile variables are used to store data that must be maintained when the
JC-365MC is de-energized.
■ Global variables which are assigned to permanent registers (%RL)
■ Variables are stored in a compact manner, according to the size of their type
■ Size: 240,000 bytes (480,000 with -R option)
■ Register numbers: 1,000,000 ... 1,059,999 (up to 1,119,999 with option -R)
■ By JetSym
■ From HMIs
■ From within the application program
In the following program 4 non-volatile variables are incremented every second.
The working range of the counters is between 0 and 255 (variable type: byte). For
these 4 variables the 4 bytes of register 1000010 are used.
Var
Cnt1, Cnt2, Cnt3, Cnt4: Byte
End_Var;
Task Count4Autorun
Loop
Inc(Cnt1);
Inc(Cnt2, 2);
Inc(Cnt3, 5);
Inc(Cnt4, 10);
Delay(T#1s);
End_Loop;
End_Task;
The JetSym setup pane shows the content of the variable. Since the 4 counters
are of the byte type, this will result in counter overflow after a relatively short time.
Number Element
1 Current content of
the variable Cnt1
2 Current content of
the variable Cnt2
3 Current content of
the variable Cnt3
4 Current content of
the variable Cnt4
At %RL 1000010;
Description
The content of the variable is incremented by 1
every second.
The content of the variable is incremented by 2
every second.
The content of the variable is incremented by 5
every second.
The content of the variable is incremented by
10 every second.
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