
APPENDIX A - VISCA SETTINGS AND COMMAND LIST
VISCA is a professional camera control protocol used with PTZ cameras. It works by sending commands to the
camera either over a serial or over an IP connection, in return the camera sends ACK acknowledgment and
COM completion answers to let the sender know the commands have been received and completed. The
below describes the commands, ranges and camera answers.
The VISCA Settings and Command list is available as an appendix in this manual and as an separate document
that you can download on the
.
VISCA over Serial Connection
VISCA is based on RS232 Serial communications at 9600 bit/s, 8N1, no flow control. VISCA uses a serial repeater
network configuration to communicate between the controller (device #0) and up to 7 peripherals (#1 through
#7). The daisy chain cable configuration means that a message walks the chain until it reaches the target device
identified in the data packet. Responses then walk the rest of the way down the chain and back up again to
reach the sender. Some packets are broadcast to all devices.
A command data packet consists of:
• Address byte (1) message header
• Information bytes (1..14)
• Terminating byte (1) 0xFF
You can use
Hercules SETUP Utility
application and a serial connection to make this work.
VISCA over IP
Avonic IP cameras are implemented with a TCP and an UDP server. The TCP as well as the UDP port are by
default set to port
The default VISCA address setting is
always 1
when using VISCA over IP. As all cameras are uniquely
identified by their IP address, all VISCA addresses are set to 1, the serial addressing plays no part. For VISCA
over IP, every command starts with
81 xx xx xx
.
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Содержание CM70-IP
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