eTung PLC-505, Руководство пользователя

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PLC-505 User Manual
65
Appendix 8: Use VNC and PLC-505
to Access and Control Devices
Remotely
VNC is the abbreviation of Virtual Network Console. It is a kind of excellent remote
control software, and it includes two parts: client software (vncviewer) and server
software (vncserver). Vncserver runs on the remote master device, and vncviewer
runs on the local pc (or mobile phone), and vncviewer connects to device that runs
vncserver and displays the desktop remotely. The basic mechanism of VNC is just
like those remote control software that run on windows: first vncviewer establishes
connection with vncserver, and then vncserver displays its desktop to vncviewer,
and allows the remote control of its desktop, thus implements remote control of
device.
VNC supports multiple OSs, including Windows, Linux, MAC OS, and Android; and
it is platform independent, i.e. we can use Windows PC running VNC to control
device that runs Linux or MAC OS, or use Android mobile to control touchscreen
that runs Linux.
Customers‟ devices, for example, touchscreens, is located on the remote places. It
requires that PC or mobile phone can remote control the touchscreen, with
vncserver running the touchscreen, and vncviewer running on the PC (or mobile).
PC and mobile can access Internet, but cannot access the touchscreen, because
there is no network access in the place of touchscreen, or: although the
touchscreen can access Internet, it does not have public network IP, and PC (or
mobile) still cannot access the touchscreen remotely. PLC-505 and together with
LianWangBao cloud server, offer an effective and convenient solution to control the
far-end touchscreen remotely via PC or mobile. Below are details of the solution.