Perimeter Security Solutions - Accessories
RS422/485 Adapter

The 422A are used with the Intrepid MicroPoint Cable system or MicroNet system. They are small circuit cardswith a terminal strip on one edge, a 16-pin female IDC connector on the other edge, a microprocessor and aRS422/485 driver chip. They connect to the male 16-pin IDC connector on the Processor Module (PM) circuitboard for RS422 or RS485 communications. The microprocessor supervises and buffers communicationbetween the PM and a PC, modem or Relay Module (RM). The RS485 is a two-wire half-duplex format used tocommunicate with Relay Modules. It supports a multi-node network. The RS422 is a four-wire full duplexformat used to communicate to a local PC or to a remote PC, through a modem, for system maintenance andadjustments and/or reporting capabilities. The RS422 line will require a RS422 to RS232 converter forconnecting to a PC or modem. The maximum wire distance from the 422A to a RM or PC is 5,000 feet(1,500m).