i need like a gateway device to make PLC and PLC connecting via cloud. PLC to PLC have long distance, so need a cloud.
1. Need modbus protocol
2. what is the best protocol if i want to connecting it to android studio ?
so need 2 kind of protocol.
to imagine i like a sample, please check it
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but i need my own brand. so need make from scratch SOFTWARE & HARDWARE.
please chat and give me the cost.