I am trying to implement a mini project at work. At the moment we have a PLC and diagnostic laptop connected by an RS232 lead. Ideally we would like to connect to this over WiFi. My current plan is to use a Serial->WiFi module of some kind, potentially an ESP8266, and plug it in to the PLC. This would allow the serial data to travel over WiFi to allow the diagnostic laptop to connect and read the data without having to plug in physically.
At the moment I only really need read capability, but write capability too would be ideal (with cyber security if possible, however not necessary).
Does anybody have an experience in a similar project and could point me in the right direction? Or just let me know how feasible the project is? Thank you.