NetLinx
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AMX manufactures the NetLinx range of controllers, computing devices designed to be used to control other devices, typically in an Audio-Visual control system.
An example is the mid-range NetLinx Integrated NI-2000 controller which has 3 RS-232/RS-485 serial ports, 4 Relays, 4 Infrared/Serial ports and 4 Input/Outputs. Serial ports can send and receive serial strings, typically ASCII instructions and replies. Relays permit switching of modest currents. IR ports can send Infrared signals which emulate typical remote control devices that control (for instance) Televisions and VCRs. Input/output ports detect contact closures.
AMX supplies an IDE known as NetLinx Studio which allows a proprietary language to be edited, complied and sent to the NetLinx controller. The language apparently has no formal name but would be known as NetLinx if it needed one.
Earlier models of AMX controller were named Axcent.