Comms Line Header – USB Converter

Serially connected RS485 controllers must be connected to the main PC/server via a comms line header. This can be a USB or an ethernet converter.

A USB converter is ‘hard-wired’ from a USB port and converts JANUS communications protocol to RS485. A USB converter is suitable for driving up to 1,200Mtrs on 2 or 4-wire copper cable.

Multiple USB converters may be connected to the same JANUS access system utilising additional USB2 ports on the Site Controller or the main PC/server.

• USB to RS485 / RS422 converter
• 2 or 4-wire connectivity
• 1-way and 4-way units available
• 1-way units powered via USB from main PC/server
• PRO versions include opto-isolation protection
  against ground potential variances
• 32 x controller nodes per comms line
• 1,200 Mtrs cable segment supported