Bailey 663720DI Network 90 Analog Master Module

Bailey 663720DI Network 90 Analog Master Module is a legacy analog master device for the Network 90 fieldbus, designed to coordinate and interface analog signals between a controller and remote analog I/O nodes on the Network 90 backbone. The part number 663720DI identifies this specific module, with NAMM03 appearing in some vendor descriptions. As the analog master, it manages signaling, addressing, and data exchange that enables sensors and actuators to be monitored and controlled across distributed I/O modules. Intended for use in industrial automation environments, applications include process control, instrumentation, and factory automation scenarios where precise analog signal measurement and control are required across a networked system. This module integrates into compatible Bailey/Network 90 configurations and works with networked analog I/O devices and appropriate controllers to provide scalable analog signal management within legacy automation architectures.