HS-105P, PE. SA AutoCam™ Pan & Tilt Head - Vinten Radamec

HS-105P Installation
HS-105SA Control Protocol
The SA version uses a custom PROM that provides position feedback to the
controller.
Talking To The HS-105SA
The head expects an 11 byte packet with the following format:
Byte Description
1 8 LSBs of 20 bit pan data
2 Next 8 bits of pan data
3 8 LSBs of 20 bit tilt data
4 Next 8 bits of tilt data
5 4 MSBs of tilt data, 4MSBs of pan data
6 8 LSBs of 16 bit zoom data
7 8 MSBs of zoom data
8 8 LSBs of 16 bit focus data
9 8 MSBs of focus data
10 Reserved - set to 0
11 Checksum
Pan and tilt are unsigned 20 bit integers. Zoom and focus are unsigned 16 bit
integers.
The checksum is the 8 LSBs of the sum of bytes 1 through 10. If the checksum
is incorrect the packet will be ignored.
Communication is RS-422 at 9600 baud, 8 bits, 1 stop, no parity. The head
expects to receive the 11 byte packet in a burst followed by an idle time that is
used to mark the start of the next packet. An idle gap during the packet transmission
will be interpreted as a bad packet and ignored.
The head expects the packets to arrive at a rate of 40 per second. This will give
the smoothest performance. If the data rate is slower you will notice some
“notchiness” as the head will try to reach the new position in 25 milliseconds. If
the new position is too far to reach in 25 milliseconds, the head will move at
maximum velocity.
3-26 User Manual