1. P.1 Examples of Applications for the tDS-700 Dec.22, 2010

2. P.2 Virtual COM Basis Meter PLC 10/100 M Ethernet RS-485 VCOM6/7 Transparent tDS-725 Command/Data/Modbus/Anything Note: 1. In the virtual COM application, the command or data is being copied between the PC and tDS-700 module with no protocol convert. This allows most of the serial protocols can be used with the virtual COM. 2. The max. COM port number in a PC is up to COM256. 3. The COM port is configured and mapped by using the VxComm Utility. 4. For Modbus/TCP to Modbus RTU/ASCII gateway, please refer tGW-700 models. Transparent (with no protocol convert) Meter PLC RS-485

3. P.3 Virtual COM Application RFID Reader Meter NS-208PSE Ethernet Switch with PoE Meter PLC Meter PLC 10/100 M Ethernet RS-232 RS-485 VCOM5 VCOM6 VCOM7 VCOM8 … VCOM5 VCOM6 VCOM7 VCOM8 tDS-712 tDS-715 tDS-725 VxComm Driver PLC

4. P.4 Direct TCP Socket Connection Meter PLC 10/100 M Ethernet RS-485 tDS-725 Send raw data via TCP client socket. Raw data Note: 1. The serial ports of the tDS-700 can be also accessed via TCP socket connections. TCP port 10001 = COM1, TCP port 10002 = COM2, TCP port 10003 = COM3. 2. Users have to configure the baud rate and data format via web configuration first, else the serial ports may send garbage data. Transparent (with no protocol convert) Meter PLC RS-485 Port 10001 (COM1) Port 10002 (COM2)

5. P.5 Serial Port Pair-connection Basis PLC 2 uses 115200 bps tDS-715 uses 115200 bps tDS-715 uses 115200 bps Serial Port Pair-connection Through the Ethernet Port 1(RS-485) PLC 1 uses 115200 bps Port 1(RS-485) Note: 1.PLC 1 and PLC 2 can communicate with each other via the RS-485 port that has pair-connection link through the Ethernet. Virtual RS-485 bus through the pair-connection.

6. P.6 Pair-connection with Different Baud Rate PLC 2 uses 115200 bps tDS-715 uses 115200 bps tDS-725 uses 9600 bps Serial Port Pair-connection Through the Ethernet Port 1(RS-485) PLC 1 uses 9600 bps Port 1(RS-485) Note: 1.PLC 1 and PLC 2 can use different baud rate and different data format at the same time when using pair-connection. But please make sure that the tDS-700 has the same setting as local serial devices. 2.The pair-connection can be created by using same or different tDS-700 models. The pair-connection is working as port-to-port. Virtual RS-485 bus through the pair-connection.

7. P.7 Virtual RS-485 Network (base on pair-connection) PLC Meter RS-485 tDS-715 tDS-725 Meter tDS-725 tDS-735 RS-485 Serial Port Pair-connection Through the Ethernet Serial Port Pair-connection Through the Ethernet Port 1 Port 2 Port 1 Port 2 (RS-485) Port 1(RS-485) Port 1 Port 1 (RS-485) Port 2 Port 2 (RS-485) Serial Port Pair-connection Through the Ethernet PLC Note: When connecting several tDS-700 (RS-485 master) in RS-485 network, you should remove the pull-high/low resister on the RS-485 port in most of the tDS-700 modules, and make sure there is only one master in the RS-485 network. Port 3