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Command List
Command and Inquiry
● Command
Sends operational commands to the FCB series
camera.
● Inquiry
Used for inquiring about the current state of the
FCB series camera.
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), 07 (camera 2)
X = 1 to 7: FCB series camera address
Responses for Commands and Inquiries
● ACK message
Returned by the FCB series camera when it receives
a command. No ACK message is returned for
inquiries.
● Completion message
Returned by the FCB series camera 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 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: FCB series camera 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 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: FCB series camera address + 8, Y = socket number
Socket Number
When command messages are sent to the FCB series
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 FCB series camera has two buffers
(memories) for commands, so that up to two
commands including the commands currently being
executed can be received. When the FCB series
camera 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, a
FCB series camera 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.
Command Execution Cancel
To cancel a command which has already been sent,
send the IF_Clear 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 7: FCB series camera address, Y = socket number
An error message will be returned for this command,
but this is not a mistake. This message indicates that
the command has been canceled.