User`s manual

1M28 and 1M75 User’s Manual PRELIMINARY 43
DALSA 03-32-00525-03
Appendix A
Appendix AAppendix A
Appendix A
Asynchronous Communications
Asynchronous CommunicationsAsynchronous Communications
Asynchronous Communications
(Camera Link
(Camera Link(Camera Link
(Camera Link) Interface
) Interface) Interface
) Interface
The asynchronous communications serial communicator interface is part of Camera Link.
(Refer to the Camera Link Specification for more information). This interface is often used
in industrial image processing for controlling camera settings. The cameras from DALSA
have a Camera Link compatible interface. The following communication settings from the
asynchronous serial communications protocol have been chosen for the DALSA camera
series:
Baud rate 9600
Startbit 1
data bits 8
Parity None
Stopbit 1
In the idle state the leads RX and TX are characterised by a standard H-level. Data
transfer begins with a startbit, which has an L-level. Next, the 8 data bits are transmitted
in the sequence from D0…D7. The parity bit follows the data. In order to separate
subsequent data, a stop bit of H-level is added. The total number of cycles necessary for
data transfer is 11. After the data transfer, signals return to the idle state.