Development of RS-485 slave using Modbus RTU

[1stcomm]

Hello,
I'm about to start developing a RS-485 Slave using Modbus RTU protocol. I would like to implement this using Microchip PIC18F46K80 or similar. This is my first RS-485/ Modbus RTU project and I would like to do as much research as possible to avoid the inevitable traps.

I'm considering the purchase of your "Serial Port Complete 2nd Edition" to gain further understanding of the mechanisms to be implemented. In addition to this, are there other additional literatures, worked examples, proven designs that I can follow to gain a sound understanding of the design/ development process. I should say I'm not to concerned about hardware development it is the software that is my weakness.

That being said I would rather do my code in C.

Regards
1stcomm

[Jan Axelson]

See my Serial Ports page for links to info and code:

http://www.janaxelson.com/serport.htm

including:

http://www.janaxelson.com/rs-485_circuits.htm

Serial Port Complete has code examples in C#.

Jan