The DHS definition

An entry for a complete DHS definition should be in the following generic format:

Line 1:name
Line 2:3
Line 3:hostName protocolLevel

• The hostName parameter is the host name of the computer that DHS will be running on. DCSS will reject a connection from a DHS announcing itself with the name if the connection is not coming from the computer/hostname hostName.

• The protocolLevel can be a 1 or a 2. A protocol of 1 is used by DHS(s) that are still using the 200 byte DCS protocol. A protocol of 2 is used by DHS(S) that have been upgraded to the dynamic length DCS protocol.

Here is an example for a camera DHS entry:

camera
3
biotest.slac.stanford.edu 2

Note: Every database.dat file should have an entry for the scripting engine DHS as shown here:

self
3
localhost 2

This will define a self DHS which scripted operations and scripted devices should use.