Transparent Remote Serial Driver
Video Server provides a highly customized control support to third-party serial interface devices aside from PTZ cameras. That means in addition to setting up a custom camera with PTZF commands, users may utilize this mode and introduce a customized homepage to transmit arbitrary user-defined commands from user-side to Video Server. The third-party device connected to the serial port of Video Server will receive the same command sent by the originator. The user only needs to attach the command in ASCII format after the special URL. Video Server will parse the commands and translate into binary code to send out.
Send command to device attached to COM1
/cgi-bin/senddata.cgi?com=1&data=123456,ABCDEF&flush=yes&wait=1000&read=6 This hyperlink will inform Video Server to send out binary format commands to COM1 with “0x12, 0x34, 0x56” followed by “0xAB, 0xCD, 0xEF”. Each comma separates the commands by 200 milliseconds. “flush=yes” means the receive data buffer of COM port must be cleared before read. Then read 6 bytes after waiting for 1000 milliseconds. The read data can be up to 128 bytes and will return as ASCII coded hexadecimal value, e.g., 0x41, 0x42, 0x43 read from COM port will show in returned homepage as 414243 instead of ABC.
Send command to device attached to COM2
/cgi-bin/senddata.cgi?com=2&data=123456,,,ABCDEF
This hyperlink will inform Video Server to send out binary format command to COM2 with “0x12, 0x34, 0x56” followed by “0xAB, 0xCD, 0xEF” after 600 milliseconds of three comma.
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