These signals from the BLM system play a role in enabling the beam permit link to allow beam. In the BPM system digitization takes place in equipment in the tunnel. Digital data is brought to the FECs using the IEEE 1394 bus. Commercial VME modules in the FEC store the BPM data in memory where it is used by the BPM ADOs. ADO methods across the network.
Drivers isolate the details of the operation of the boards from the higher levels of the system.
The most important class methods for device control are the set and get methods. The set and get methods can use the device drivers to access the underlying controls hardware. ADO parameters are the common and the lowest level interface to the control system. ADO classes have been written to support all the current hardware. The application program interface to ADOs on the CLCs is through the ADO Interface class.