An industrial tablet 485 serial interface (RS232 port through the mainboard jumper wire and change the BIOS) in the self-test (native RS232 and RS485 through the converter mouth is linked together, using serial debugging assistant testing) when data transceiver is normal, but the individual at the scene with 485 serial port (no connect RS232 and RS485 converter) can only send the sensor can't accept, excuse me what reason, how to deal with, note: laboratory environment, the distance of 10 meters, be urgent!

CodePudding user response:

The logic analyzer.

CodePudding user response:

At least on the oscilloscope.

CodePudding user response:

No oscilloscope, was caused by a lack of power? This industrial tablet computer is input dc power supply, with 4 u industrial computer is no problem,

CodePudding user response:

And the sensor communication with what the agreement

CodePudding user response:

Meet the same problem, sent via 485 bottom go to, don't get the data returned