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TTL Transfer to RS485 Isolated Communication Board Module 1200bps-57600bps
- The board enables TTL signal to RS485 level serial adapter, the signal transmission through the optical coupler electrically isolated, and 485 bus terminal has a TVS diode protection, overall superior performance, maximum communication rate up to 38400bps, is the need for 485 ideal communication adapter plate。
- 485 has two parts A, B a shielding layer G, actually are pairwise connected to the board, this is designed primarily as a convenience cascade, the other side is a TTL interface, which need to be connected Vcc and GND externally supplied 5V power, TxD and RxD serial data is sent and received. There is also a jumper, you can choose whether the access between the AB 120 ohm termination resistors, the end of the 485 network to pick up such a termination resistor. The other board jumpers are designed for us to facilitate debugging, the user need not be concerned.
- 1 x adapter