RS485 to RS232 Serial Converter and Common Fault Analysis
1. Data communication is unsuccessful
a. Check whether the RS232 interface is connected correctly;
b. Check whether the RS485 interface is connected correctly;
c. Check whether the RS232 interface signal level (TXD, DTR, RTS) is lower than +5V, if it is lower than +5V, power supply can be supplied on the 6th pin of DB9M;
2. Data is lost or garbled
a. Detect the data rates at both ends of the data communication device, but whether they are consistent;
b. Matching resistance 1/4W 120Ω can be added.
