Basically， as the operation panel for industrial control， HMI don’t need to play video. But in some occasions， we do need to monitor some place. So WECON customize the special need for the customers.
Video play principles
WECON HMI can play the video download from specified network. Its format is AVI whose size could be from several M bytes to several G bytes. WECON HMI adopts the cycling display mode. The distribution and play of video data is shown as follows:
Video play principles
WECON HMI can play the video download from specified network. Its format is AVI whose size could be from several M bytes to several G bytes. WECON HMI adopts the cycling display mode. The distribution and play of video data is shown as follows:
Elements in the system:
Server: use to store the video data， as FTP server for HMI downloading.
HMI: if there’s no operation in a specified time， it will display video which is stored in CF card. The largest CF card WECON can support is 4G.
Ethernet: connect HMI and server.
Video data management:
1. The video data played by HMI are all managed and distributed from server.
2. The server offer FTP service to allow HMI download video data.
3. The format of video can be AVI， DAT， 3GP and so on. The resolution must be less then 640*480.
4. We can set HMI’s IP， net gate parameters and server’s IP address.
5. HMI download from server through FTP at fixed period.
6. The new download video will cover the original video data.
The procedure of video play:
1. Play automatically
When there’s no operation on HMI in a certain period， HMI will play the video cycling.
2. Click to play
Click the video play button to play the video.
Configuration monitor:
WECON HMI connect with PLC through communication port such as RS232 and RS485. The screen can show as picture style. It’s the same with general human machine interface. We don’t discuss redundancy here.
The parameter of WECON HMI hardware:
Type: LEVI-777T
LCD: 7” TFT true color LCD
Color: 65536 colors
Resolution: 640*480(SVGA)
Backlight: LED backlight， 350lm
Life: more than 50，000 hours
Touch screen: four lines resistance type
CPU: RISC CPU 200MHZ
Power supply: DC24V
Power consumption: less than 10W
CF card: 1~4G
Port 1: RS232/RS485
Port 2: RS232/RS485/RS422
Ethernet: 10/100M self-adaption
Operation system: WINCE 5.0
Configuration software: WECON Levistudio
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