Brand:

• AMX

Models:

• Anything that has an AxLink port

Question:  

What is the AxLink Wiring Specification?

Answer:

AxLink is a proprietary communication protocol designed by AMX to control up to 255 devices with a Central Controller using common copper conductors.

The AxLink communication protocol supports multiple wiring topologies, including star, daisy-chain, home run, or any combination.

AxLink devices are electrically wired in parallel and require a minimum of 3 conductors for signal/power ground, AXM, and AXP. An optional fourth conductor can be used for 12 VDC power distribution.

The AXM and AXP AxLink data signals are differential and require one pair of twisted conductors.

Axlink Specifications

• Transmission method: Half-Duplex
• Transmission medium: Shielded pseudo differential twisted pair
• Data rate: 20.8K
• Signal level: 5 volts peak to peak typical
• Input impedance: 220K ohms typical
• Total devices allowed on link: 255
• Protocol: Proprietary Asynchronous Polled Access
• Total distance: 3000 feet (914.4 m) when using shielded low capacitance cable. UTP limited to 1000 feet (304.8 m).
• Packet size: Proprietary Variable, payload limited to 64 bytes.
• Suitable topologies: Star, Daisy-Chain, or a combination of both​