What data is received when FX2N-458BD is sent? What is the reason for sending data?
I use FX2N485BD two wire mode and temperature control table communication, I send what data, what data is received, how to set up?

The difference between FX2N-4AD and FX3U-4AD
FX2N-4AD and FX3U-4AD? Is the FX2N series PLC only FX2N-4AD, while the FX3U series PLC can be both FX2N-4AD and FX3U-4AD? What are the specific differences between the two? Thank you