It's been about a decade since I've done much with electronics, but I'm starting to get back into the game. What I'm wanting to do is create an RS485 network with one "master" that sends the data off to an RS232(pc serial port). Each "slave" will have a few sensors that I want to be collecting data(temperature, etc). I'm stuck at an early spot in my design phase and need some guidance
sensor->adc->microcontroller->rs485 transceiver->electrical bus->rs485 transceiver->rs232
I'm looking for the simplest approach with fewest components per node. Even referencing just part numbers will give me na idea of where I need to go
- For each "slave" should I be using a serial output ADC? I'd like one ADC per sensor.
- For each slave, should I be using an RS485 transceiver with more than 1 driver and receiver?
- I don't need a microcontroller for the ADC to talk to the RS85 on the slave, do I?
- For the master, is it sufficient to collect from the 485 and send it too to an RS232 converter?
sensor->adc->microcontroller->rs485 transceiver->electrical bus->rs485 transceiver->rs232
I'm looking for the simplest approach with fewest components per node. Even referencing just part numbers will give me na idea of where I need to go