modbus is primarily used in industrial control and automation. developed by Modicon(Schneider Electric) it is a protocol using rs-232, rs-485 or Ethernet, it is a packet based communications standard. common devices that use modbus include(not limited to) PID controllers, programmable logic controllers, motor controllers, and user interface systems.
the serial based protocol can be fairly easy(compared to Ethernet) to implement into a small microcontroller system using standard uart.
Thank you for this information. So you means that modbus is a packet based communication protocol.
1> So that means on both side (master and slave) microcontroller must be there to process the request or to give the response.
2> Sensor doesn't have any microcontroller means if sensor is equipped with microcontroller circuit then only data acquisition system and sensor communication over modbus protocol is possible.
Is these both points are correct or not ? If not then please correct me.
