This is the Hiway Interface Module for the Advanced Multifunction Controller.

This module allows communication between the AMC and other Hiway devices, such as the Enhanced Operator Station and the Hiway Gateway. The AMC uses two Hiway addresses, which are set by switches behind the front panel of this module. LEDs on the front panel show module status.

The Hiway Interface Module connects to redundant Hiway Internal Cables (HIC), which are then connected to the redundant Hiway Cable Interface modules (HCIM), where the Hiway coaxial cable connects to the AMC.

A single J-MHM10 is used in non-redundant controllers; two are required for redundant configurations.