Hello Sir,

This is a very good project as it supports various powerful microcontroller. But due to shortage of I/O pin some time it is not possible to build a ladder logic program which has lots of I/O and connection with standard SCADA is also very difficult.

We can overcome this limitation very easily with the help of MODBUS RTU. So you are requested to think over this and try to implement the same as soon as possible.

Thanks & Regards
Jagadish Paul