Introduction

SI-VCP is software that allows the serial communication ports of a LAN-to-Serial converter (hereafter referred to as the SI series) connected to a PC via LAN to be used as a COM port on that PC. It creates a virtual COM port on Windows and transfers communication data from that port to the serial port of the SI series unit via the network.

Typically, the SI series unit is operated in server mode, and the PC with SI-VCP installed acts as the client. A connection is established by opening the virtual COM port from an application on the PC.

Since most applications using COM ports recognize this virtual COM port as a physical serial port, it is possible to perform network communication without modifying existing software.

Supported Models

Compatible with the SI-60 series, SI-65 series, SI-70X, LA-232R-P, and LA-485R-P.
The SI-60SG and SI-65SG can be used by combining them with the LAN connection gateway LA-SG100E.
For details, please refer to Usage Examples.

Precautions for Use

• Communication Timeout Limitations
  Communication via a network introduces delays along the path. Applications with strict time limits for data transmission and reception may not function correctly due to this latency. In such cases, please adjust the application settings, such as extending the communication timeout period.

• RTS/CTS Flow Control Limitations
  RTS/CTS flow control on the SI series unit is handled automatically between the unit and the serial device. Therefore, it is not possible to directly control or monitor RTS/CTS signals from the application on the PC side.