4K 18x Zoom Block Camera Technical Manual
30
9.
APPENDIX A
VISCA Protocol
9600, 19200, 38400, 115200bps 8bit data 1stop bit none parity
Command Packet (3~ 16bytes)
Comments
Inquiry
8X QQ RR ... FF
8X: 0x80+Sender addr(H Recv addr(L
nibble)
addr(1~7)
QQ: 01-Command/ 00-Inquiry
RR: Category
00(Interface) 04(cam1) 06(Pan/Tilt) 07(cam2)
FF: Terminator (0xff)
Reply Packet
Completion
message
ACK
X0 4Y FF
X = 9 to F: Camera a 8
Completion
(commands)
X0 5Y FF
Y: socket number
Completion (Inquiries) X0 5Y ... FF
Reply Packet
Error message
Error
X0 6Y 01 FF
Message length error (>14 bytes)
X0 6Y 02 FF
Syntax Error
X0 6Y 03 FF
Command buffer full
X0 6Y 04 FF
Command cancelled
X0 6Y 05 FF
No socket (to be cancelled)
X0 6Y 41 FF
Command not executable
X = 9 to F: Camera a 8, Y = socket number
Command
execution cancel
cancel
8X 2Y FF
X = 1 to 7: Camera address,
Y = socket number
Network
Address
88 30 01 FF .
Always broadcasted
Change Address
Network Change
X0 38 FF
X = 9 to F: Camera a 8
85Z18H
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