IF THEN Sample

This sample configures input 1 as a general purpose input which can then be used as a control bit in the program. If I1 is true, the program continuously loops in label M1 with a relative move of 200000. If I1 goes false, the program falls through M1 and loops in label M2 with a relative move of -100000. A good way to observe the sequence of code execution is to launch the program in trace mode (EX SU,1). Every instruction is mirrored to the terminal window, which is beneficial for program development and debug.

'If THEN Sample 'CODE DESCRIPTION PG 100 'Enter program mode at address 100 LB SU 'Label using SU to start program 'upon power up S1=0,1 'Sets I/O 1 as a general purpose 'input, active high LB M1 'Label to begin motion profile 1 MR 200000 'Move relative 200000 steps H 'Hold until motion is complete BR M1, I1=1 'If input is true then branch to 'label M1 LB M2 'Label to begin motion profile 2 MR -100000 'Move relative 100000 steps H 'Hold until motion is complete BR M1, I1=1 'If input is true then brance to 'label M1 BR M2 'Unconditional branch to label M2 E 'End program PG 'Exit program mode



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