step=120;
backlash_step=100
iter=20
repeat=3

if (step>0) {
	de_backlash=backlash_step;
}
else {
	de_backlash=-backlash_step;
}

spm.xystage.move(-de_backlash,0)
spm.sleep(200)
spm.xystage.move(de_backlash,0)

for (j=0; j<repeat; j++) {
	path = 'C:/Park Systems/SmartScan/vision/accuracy/xy_x_stage_ruler_w_f_' +j+'/'

	for (i=1; i<iter+1; i++){

		if (i<10){
			spm.vision.capture(path+'0'+i+'.png');
		}
		else {
			spm.vision.capture(path+i+'.png');
		}
		spm.sleep(200)
		spm.xystage.move(step,0)
	
	} 
	spm.sleep(200)
	spm.xystage.move(-step*(iter+1),0) //de_backlash
	spm.sleep(200)
	spm.xystage.move(step,0)
}