Vaddio EVI-D80D90 Tech - Manual (Page 23)

23
Command List
Command and inquiry
 Command
Sends operational commands to the
EVI-D80N/D80P/D90N/D90P.
 Inquiry
Used for inquiring about the current state of the
EVI-D80N/D80P/D90N/D90P.
Command Packet Note
Inquiry 8X QQ RR ... FF QQ 1) = Command/Inquiry,
RR 2) = category code
1) QQ = 01 (Command), 09 (Inquiry)
2) RR = 00 (Interface), 04 (camera 1), 06 (Pan/Tilter)
X = 1 to 7: EVI-D80N/D80P/D90N/D90P address
Responses for commands and inquiries
 ACK message
Returned by the EVI-D80N/D80P/D90N/D90P
when it receives a command. No ACK message is
returned for inquiries.
 Completion message
Returned by the EVI-D80N/D80P/D90N/D90P
when execution of commands or inquiries is
completed. In the case of inquiry commands, it will
contain reply data for the inquiry after the 3rd byte
of the packet. If the ACK message is omitted, the
socket number will contain a 0.
Reply Packet Note
Ack X0 4Y FF Y = socket number
Completion (commands) X0 5Y FF Y = socket number
Completion (Inquiries) X0 5Y ... FF Y = socket number
X = 9 to F: EVI-D80N/D80P/D90N/D90P address + 8
 Error message
When a command or inquiry command could not
be executed or failed, an error message is returned
instead of the completion message.
Error Packet Description
X0 6Y 02 FF Syntax Error
X0 6Y 03 FF Command buffer full
X0 6Y 04 FF Command canceled
X0 6Y 05 FF No socket (to be canceled)
X0 6Y 41 FF Command not executable
X = 9 to F: EVI-D80N/D80P/D90N/D90P address + 8, Y = socket number
Socket number
When command messages are sent to the
EVI-D80N/D80P/D90N/D90P, 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 EVI-D80N/
D80P/D90N/D90P has two buffers (memories) for
commands, so that up to two commands including the
commands currently being executed can be received.
When the
EVI-D80N/D80P/D90N/D90P receives commands, it
notifies the sender which command buffer was used
using the socket number of the ACK message.
As the completion message or error message also has a
socket number, it indicates which command has ended.
Even when two command buffers are being used at any
one time, an EVI-D80N/D80P/D90N/D90P
management command and some inquiry messages
can be executed.
The ACK message is not returned for these commands
and inquiries, and only the completion message of
socket number 0 is returned.
The following command use two sockets during
execution of each command that is sent. The
EVI-D80N/D80P/D90N/D90P cannot receive other
requests during execution of these commands. In
addition, these commands cannot be executed during
operation of other commands.
 SYS_Menu
Command execution cancel
To cancel a command which has already been sent,
send the Cancel command as the next command. To
cancel one of any two commands which have been
sent, use the cancel message.
Cancel Packet Note
Cancel 8X 2Y FF Y = socket number
X = 1 to : EVI-D80N/D80P/D90N/D90P address, Y = socket number
The Command canceled error message will be returned
for this command, but this is not a fault. It indicates
that the command has been canceled.