Communications

The DSP240 controller board supports four communication protocols: RS-232, RS-422, multi-drop RS-485 and a high-speed synchronous serial peripheral interface. The DSP incorporates asingle UART, which is used for RS-232/422/485 communication. A link (LK11) is provided to select between these three communication protocols. These signals are isolated through optocouplers from the main PCB. The high-speed synchronous serial peripheral interface can be used to communicate to other computer systems. The interface can support either master or slave protocol, selected by software