Examples of Applications for the tDS-700

1
Examples of Applicationsfor the tDS-700

• Dec.22, 2010

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Virtual COM Basis
Command/Data/Modbus/Anything
Command/Data/Modbus/Anything
Transparent (with no protocol convert)
VCOM6/7
VCOM6/7
Transparent
PLC
RS-485
10/100 M Ethernet
RS-485
tDS-725
PLC

• Note
• 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.
• The max. COM port number in a PC is up to COM256.
• The COM port is configured and mapped by using
  the VxComm Utility.
• For Modbus/TCP to Modbus RTU/ASCII gateway,
  please refer tGW-700 models.

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Virtual COM Application
VxComm Driver
VCOM5
VCOM5 VCOM6 VCOM7 VCOM8
RS-232
RFID Reader
tDS-712
VCOM6
10/100 M Ethernet
RS-485
PLC
tDS-715
VCOM7
RS-485
PLC
VCOM8
NS-208PSE Ethernet Switch with PoE
tDS-725
RS-485
PLC
4
Direct TCP Socket Connection
Raw data
Send raw data via TCP client socket.
Transparent (with no protocol convert)
Port 10001 (COM1) Port 10002 (COM2)
PLC
RS-485
10/100 M Ethernet
RS-485
tDS-725
PLC

• Note
• 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.
• Users have to configure the baud rate and data
  format via web configuration first, else the
  serial ports may send garbage data.

5
Serial Port Pair-connection Basis
Virtual RS-485 bus through the pair-connection.
Port 1(RS-485)
Port 1(RS-485)
Serial Port Pair-connection Through the Ethernet
PLC 1 uses 115200 bps
PLC 2 uses 115200 bps
tDS-715 uses 115200 bps
tDS-715 uses 115200 bps

• Note
• PLC 1 and PLC 2 can communicate with each other
  via the RS-485 port that has pair-connection link
  through the Ethernet.

6
Pair-connection with Different Baud Rate
Virtual RS-485 bus through the pair-connection.
Port 1(RS-485)
Port 1(RS-485)
Serial Port Pair-connection Through the Ethernet
PLC 1 uses 9600 bps
PLC 2 uses 115200 bps
tDS-715 uses 115200 bps
tDS-725 uses 9600 bps

• Note
• 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.
• The pair-connection can be created by using same
  or different tDS-700 models.The pair-connection
  is working as port-to-port.

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Virtual RS-485 Network (base on pair-connection)
Serial Port Pair-connection Through the Ethernet
Port 1
RS-485
Port 1
PLC
Port 2
tDS-715
tDS-725
Port 1(RS-485)
Serial Port Pair-connection Through the Ethernet
Port 1
PLC
Port 2
Port 2 (RS-485)
Port 3
tDS-725
Meter
tDS-735
RS-485
Port 1 (RS-485)
Serial Port Pair-connection Through the Ethernet
Port 2 (RS-485)
tDS-725
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.