var speed = 1.0;
var maxCount = 20;
var distance = 1000 * 1000 * 1000;
var strokes = spm.focusstage.range;

print("hw limit = " + strokes.full[0] + " ~ " + strokes.full[1]);
print("sw limit = " + strokes.safe[0] + " ~ " + strokes.safe[1]);
print("reset stage ...");
spm.focusstage.reset();
spm.sleep(1000);

for (count = 1; count <= maxCount; count = count + 1) {
    print("repeat count = " + count + " ------------------------------------------------");
    print("- position = " + spm.focusstage.pos + ",  moving down ...");
   
    try {
        spm.focusstage.move(-distance, speed);
    } catch (e) {
        spm.sleep(1000);
        print("- position = " + spm.focusstage.pos + ", lower hardware limit reached");
    }

    spm.sleep(1000);
    print("- position = " + spm.focusstage.pos + ", moving up ...");

    try {
        spm.focusstage.move(+distance, speed);
    } catch (e) {
        spm.sleep(1000);
        print("- position = " + spm.focusstage.pos + ", upper hardware limit reached");
    }

     spm.sleep(1000);
}