Advantech EKI-1322 Manual de usuario descargar pdf (Pagina 15)

9 EKI-1321/1322 User Manual

Chapter 2 Getting Started

2.1.2.3 Reversed Virtual COM Port Mode (RVCOM)

Sometimes, the EKI serial device server has a dynamic IP address, or even a private

IP address. The host PC can't connect to the device directly. With the RVCOM func-

tion, the EKI serial device server can connect to a specific PC when booting up. That

can help the end devices easily cross the Ethernet barrier.

When the application opens, the RVCOM port and the connection between host and

device is not yet established, the open COM port action still will return success. And

the write action will always be successful and the read action will not trigger or just no

data. The situation is similar to the COM port that doesn't connect to any serial

device.

After the EKI serial device server is established, the Ethernet connection, the behav-

ior is similar to VCOM mode.

2.1.3 TCP Server Mode

In TCP server mode, you might initiate the TCP connection from host to EKI serial

device server. This operation mode support max. five simultaneous connections for

each serial port on EKI serial device server from one host or several hosts, however

multi-hosts collect the data from one serial port at the same time

Figure 2.4 TCP Server Mode

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Advantech EKI-1322 Manual de usuario Pagina 15