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1. You need a RS232 to RS485 converter. Hundure model is EPC-402.
2. Make sure device jumper is set to RS485 mode.
3. RS-485 should be connected with RTA700's PIN4 and PIN6 .
4. After connecting, please check TD and RD LED of EPC-402 flashes during data retrieval.
-- If TD LED did not flash, check system setting.
-- If TD LED flashes, but RD LED did not, check wiring connection.
-- If TD and RD LED flashed but the connection is not established, kindly contact your dealer for support. |
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RS232→PIN2 connect TXD,PIN3 connect RXD ,PIN5 connect GND. RS485→PIN1connect 485- ,PIN2 connect 485+ *The cable mentioned above is a standard 9-pin connector. RS485 needs to be connected with EPC402 or TCP/IP Converter. |