Microchip brand identity is a valuable asset protected by trademark law. Microchip aims to protect this asset by ensuring that its trademarks are used properly by Microchip, its customers, licensees, distributors, vendors, consultants, developers and others. You may use Microchip trademarks and product names to refer to Microchip products and services as long as you follow these Guidelines.
...
Re: Multiple PICs on usart network
I saw a mention further up the thread about 1-wire comm.
Demon Today, 01:18OBD-II signal protocols. ISO 9141-2. This protocol has an asynchronous serial data rate of 10.4 kbit/s. It is somewhat similar to RS-232;...