Table of Contents
Advertisement
4.3 VISCA Communication Specifications
VISCA Packet Structure
The basic unit of VISCA communication is called a packet. The first byte of the packet
is called a header and comprises the sender's and receiver's addresses. For example,
the header of the packet sent to the camera module assigned address 1 from the
controller (address 0) is hexadecimal 81h. The packet sent to the camera module
assigned address 2 is 82h. In the command list, the header is 8x where x is the address
of the camera module. The header of the reply packet from the camera module
assigned address 1 is 90h. The packet from the camera module assigned address 2 is
A0h.
Some of the commands for setting camera modules can be sent to all devices at one
time (broadcast). In the case of broadcast, the header should be hexadecimal 88h. The
terminator is FFh. It signifies the end of the packet.
49 / 79
Tamron Co., Ltd.
Advertisement
Table of Contents
