EverFocus EDR-1640 - Manual (Page 77)

The following remote control protocol applies to RS232 and RS485 remote control. The
EEPBus protocol is a universal control protocol for EDSR and EDR (MPEG4) series’ digital video
recorders. Therefore, it may occur that some of the following commands are not available for
all DVR types.
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1-1. Sample control code packets
Example 1 : A packet that sends "REC" key to DVR (ID=5)
0x85 (length)
0x00 (Receiver ID high byte)
0x05 (Receiver ID low byte)
0x4B (OPcode = key )
0x08 (DATA1 = "Rec" keycode )
0x5D (checksum)
Example 2 : A packet that sends "PAUSE" key to DVR (ID=4999)
0x85 (length)
0x27 (Receiver ID high byte)
0x07 (Receiver ID low byte)
0x4B (OPcode = key )
0x0C (DATA1 = "Pause" keycode )
0x0A (checksum)
Example3 : A packet that sends "PLAY" key to all DVR (broadcast)
0x85 (length)
0x7f (Receiver ID high byte)
0x7f (Receiver ID low byte)
0x4B (OPcode = key )
0x0B (DATA1 = "Play" keycode )
0x59 (checksum)
APPENDIX C: Remote control protocol
3. Remote control protocol