Industrial Data Systems IDS Scale Basic - Manual (Page 14)

Scale Basic 4.2E Tutorial
The permanent storage registers (Fixed43…50) are used for permanent storage of numbers.
These registers are stored in EA-ROM memory, they retain their value if power is lost. They are
set by using the configure function for parameters 43…50 (EZ Link Fixed Registers). It is NOT
good practice to change these registers using Scale Basic; the changes will be lost on power up or
when the configure function is invoked.
The next program prompts the operator for 2 numbers, adds the numbers together, and displays
the sum. It uses registers Memory1 and Memory2 to store the operator’s input, and Memory3 to
store the sum.
Application Description
Enter 2 numbers from the keyboard, add them together, display the sum.
Results / Outputs
Display the sum of 2 numbers.
Inputs
F1 key to begin program
Operator data entry of 2 numbers.
Sequence of operation
Press the F1 key to begin program
Enter up to 6 digits, then press the Enter key.
Enter up to 6 digits, then press the Enter key.
Add inputs to obtain sum.
The sum is displayed.
The Inputs section lists the F1 key to start the program and the input of 2 numbers. The input
of the 2 numbers will be done in Scale Basic, the F1 key is an event that can be configured.
Event Function Comments
F1 key User1 begin summing program.
Use the sequence of operation to define User Function 1. The F1 key event triggers a function
that requires entry of 2 numbers. From the list of Scale Basic Instructions we find the Get Data
[r] instruction is used to enter data. The next step is to add the 2 numbers together. The Add [r]
[a] [b] instruction is used. Finally, the result is displayed. The Display [r] instruction is used.
NOTE: the program listing that follows is formatted in a more compact form than the HELLO
program above. Instead of listing the instructions under Instruction, Operand 1, Operand 2, and
Operand 3, the instructions and operands are listed together separated by commas.
Function Instructions Comments
User1 Get data, Memory1 Memory1 = Get operator input
Get data, Memroy2 Memory2 = Get operator input
Add, Memory3, Memory1, Memory2 Memory3 = Memory1 + Memory2
Display, Memory3 Display sum
End End of function