Industrial Data Systems IDS Scale Basic - Manual (Page 21)

Scale Basic 4.2E Reference
Reference
The reference is divided into 3 sections:
1. Instruction Reference: details each Scale Basic instruction and provides examples.
2. Condition Codes: details the condition codes and how they are used.
3. Built in Functions: the built in functions that can be used with Gosub and Goto instructions.
Instruction Reference
Add [r] = [a] + [b] 200 [r] [a] [b]
Purpose: add registers [a] & [b], put the result into register [r].
Remarks: add any two registers together, and put the results into a third register. Sets condition
codes Positive, Negative, and Zero to reflect results.
Example: Add, Memory1, Memory2, Memory3 Memory1 = Memory2 + Memory3
Add, Memory5, Memory5, Net Add Net weight to register 5.
All off 229
Purpose: turn off all setpoints, relays, and timers.
Remarks: this instruction is usually used to turn off everything when an error occurs, or to make
sure everything is off at the end of a process.
Example:
All off Turn off all setpoints, relays, and timers.
Beep (n) 233 [n]
Purpose: Sound the beeper [n] times.
Compare [a] - [b] 208 [a] [b]
Purpose: compare 2 registers. The condition codes (Positive, Minus, and Zero) are set as a
result of subtracting register [a] from register [b], therefore:
Positive = True if register a > register b
Negative = True if register a < register b
Zero = True if register a = register b
Remarks: the Compare instruction does not change the value of any registers, it only changes
the value of the Positive, Negative, and Zero condition codes.
Example: register Fixed43 contains a setpoint. Turn off relay 1 if Net > Fixed43
Compare, Net, Fixed43
If, Positive If Net > Setpoint Fixed43
Relay off, 1 turn off relay 1
End if End if