Mickey, I used your MOV instruction suggestion. The less math calculations the better for faster execution. Please see attached screenshot. The first MOV, moves the selected speed to N7:4, the second moves the N7:4's value to 1762sc-OF8 module (did not work) and the last MOV instruction moves the value to 1762-OF4 module, which worked perfectly.
What could be wrong for module OF8 module? the module now shows a blinking indicator LED. Before including the OF8 MOV instruction it was a steady indicator LED, meaning it was fine.
