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USB to RS232/485/TTL Interface Converter, Industrial Isolation
Click here to install the corresponding drivers.
Yes, it also supports Win7/8/8.1/10/11, Mac, Linux, Android, and WinC...
Remove the 120-ohm termination matching resistor for RS485.
Not supported, RS232, RS485 and TTL can not be interchangeable, support USB to RS232, RS485, or TTL.
TTL and RS232 are full-duplex communication, you can short RXD and TXD to test, RS485 is half-duplex communication, you can test with an external USB to RS485 device, the following figure is the loopback test TTL:
VCC is the power supply pin, which can be switched by 5V or 3.3V (50mA) to power the connected device, if the device already has another external power supply, it can be connected without VCC.
No, but it is more stable with a connection to GND. For better performance, reliability, and anti-interference, it is recommended to connecting to GND for a long-distance communication.
The isolation voltage is 5V.
This is a standard universal RS232 interface.
The RS-232 signal level is between +3V and +15V, or between -3V and -15V. Specifically, when the output voltage is between +5V and 15V, the driver outputs logic 0. When the voltage is between -5V and -15V, the driver's output logic is 1.
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