The Virtual Serial Client mode is used to provide a TCP interface to a serial device. The serial device will then appear as an IP client to an IP server.
The Virtual Serial Client mode does not require the end points to use a request/response protocol. However, there is one exception. When COM2 is used in the RS-485 two-wire mode then a write to the COM2 port must be followed by a read. The COM2 serial port, in that mode, is therefore the recipient of a request from the IP100 and returns a response to the IP100.
The configuration parameters are:
IP Address | IP address of the client port. Must be x.x.x.x where each x is in the range 0 to 255. |
IP Port | IP port number. It is best to use 1024 and above since lower numbers are well-known ports. |
COM Port | Serial port number in the range 0 to 4. |
In this example one modbus master is connected to the Internet using an IP100 configured as a virtual serial client. Even though modbus is shown in this example the Virtual Serial Client mode can use any protocol.