This converter has a female DB9 connector on the RS232 side and screw terminals on the RS485 side. This converter provides half-duplex RS-485 communication. The Baud rate range is 300 bps to 115200 bps, maximum up to 6 Mbps. No external power is required for operation – The converter powers itself parasitically from the DTR pin of the RS232 port. If DTR power is unavailable, external power may be provided via the screw terminals.
This adapter has the following connections:
Screw Terminal Block (4 Terminals (20AWG – 26AWG Wire))