1756 Oa16 Wiring Diagram. For full product specifications, please see the product catalog. Controllogix ac digital i/o modules. Mecha Wiring 1492 Acb Wiring Diagram from mecha-wiring.blogspot.com This module uses one of the following rtbs: Cables are available in 0.5m, 1.0m, 2.5m, and 5.0m standard lengths (005=0.5m, 010=1.0m, 025=2.5m, 050=5.0m). Custom length cables are also.