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Communications Between the VAX and the ACCs

The communications between the observer and antenna is through a set of computers and tasks as described below.

Command issued from CAOBS (on XBONES) transferred to the LEGACY SERVER on XBONES;
LEGACY SERVER on XBONEScommunicates with the ACCs
ACC further transfers the commands to the appropriate hardware in the antenna;
ACC collects data (monitor points) from the antenna hardware about the actual state of the antenna hardware;
(ATDRIVEMON and ATLOGOBS running on FURIOUS (or KAPUTAR) displays this flow of information to the observer)
This is communicated back to the ATDAEMON on XBONES
This is then returned to MPSERVER on XBONES which dumps it into the XBONES obscom common area and thus back to CAOBS as well as CAMON, ASSISTANCE etc.

**Figure 8.1:** XBONES-ACC Communications: the ACCs are in the antennas, the other tasks run on xbones.
$\begin{figure} \includegraphics[width=0.7\textwidth]{acc.eps} \centering \end{figure}$

All communications are done by TCP/IP Socket.

Next: LEGACY SERVER Up: Online Programs, Processes and Previous: Online Programs, Processes and Contents Index

Robin Wark 2006-10-24