Views: 0 Author: Site Editor Publish Time: 2026-10-27 Origin: Site
RS232 or RS485 communication interface, users can only choose one of the standard communication interfaces to access the module.
For the RS232 communication interface, the three wires are connected to TXD, RXD and GND. For selecting the RS485 communication interface, prepare the RS232 to RS485 converter. The two RS485 wires correspond to 485+ and 485-. When wiring, you must pay attention to check the one-to-one correspondence between the port and the external wiring.
Case: The customer reported that the product has no signal output. After checking the picture, it was found that the RS232 line was connected to the RS485 terminal. This problem often occurs.
