Harrier series camera
.
November 2022
www.activesilicon.com
Page 31 of 59
5.
Visca Protocol
•
Command packet (Variable packet length)
-
X: 1 ~ 7 (Camera address)
-
QQ: 01 (Command), 09 (Inquiry)
•
Ack message packet (Variable packet length)
-
Y: 9 ~ F (Camera a 8)
-
Q: 4 (Receive Ack), 5 (Completion message), 6 (Error message)
-
R: Socket Number (1 ~ 3)
※
When command messages are sent to the camera, it is normal to send the next command
message after waiting for the completion message or error message to return. However, to
deal with advanced uses, the camera has three buffers (memories) for commands, so that up
to three commands including the commands currently being executed can be received.
When the camera receives commands, it notifies the sender which command buffer was used
using the socket number of the ACK message.
