L
I am working on an building industrial controller that will be using Modbus ASCII or RTU as an internal communication path. The paths are between a AMCC 440 PPC (Master) running C/C++ application on a VxWorks RTOS and multi drop interfaces to distributed FPGAs. I have compilers for the target processor but am looking for a API for the Modbus that would use the CPU's Uarts to implement the Modbus protocal. I am also looking for FPGA source code (VHDL/Verlog) for the slave side.
