Amit IWP87DAM-07151, Руководство пользователя

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PoE AP Router
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4.1.2 Virtual COM
Create a virtual COM port on user’s PC/Host to provide access to serial device connected to the serial port on
gateway. Therefore, users can access, control, and manage the connected serial device through Internet (fixed
line, or cellular network) anywhere. This application is also known as Ethernet pass ‐ through communication.
Virtual COM setting screen enables user to connect a Virtual COM port based device to the Internet. It allows
user to access serial data remotely. There are TCP Client, TCP Server, UDP, and RFC2217 modes for remote
accessing the connected serial device. These operation modes are illustrated as below.
TCP Client Mode
When the administrator expects the gateway to
actively establish a TCP connection to a pre ‐ defined
host computer when serial data arrives, the
operation mode for the "Virtual COM" function is
required to be "TCP Client" and when the connection
control of virtual COM is "On ‐ demand", once the
gateway receives data from the connected serial
device, it will establish a TCP connection to transfer
the received serial data to the remote host. Besides,
after the data has been transferred, the gateway
automatically disconnects the established TCP
session from the host computer by using the TCP
alive check timeout or idle timeout settings.