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  1.1.2 Query with RS422 / RS485- Changer on RS232:
 

These Connector changes RS422/RS485- signals to RS232- signals. The special: it don't need a external power supply. With a special circuit it generate the power from the RS232- signals. Is nevertheless the power to less, you can give them a external power supply from 5V on the RS485- Connector. The device is saved for hyper voltage. Your PC cannot broken, the RS232 has a limitation for maximum current.

The maximum baud rate is 115 KBaud. With the RTS- Line it change the direction between sending and receiving.

These hardware working with BinTerm- software under Windows 9x, NT4.0, 2000 and XP.

Many factors can use these Changer. So you can use them without special cable for parameter a Siemens FU with Siemens- Software...

The connector:
RS232-female RS485-male
Pin-Nr Function Pin-Nr Function
2 RxD 2, 3 Line A
3 TxD 5 GND
4 >> 6 DTR >> DSR 6 +5V
5 GND 8 Line B
7 RTS


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