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The device

The device is at the heart of the DSM. A device is an abstract concept defined by the DSM. In reality it can be a piece of hardware (e.g. an interlock bit) a collection of hardware (e.g. a screen attached to a stepper motor) a logical device (e.g. a taper) or a combination of all these (e.g. an accelerator). Each device has a unique name. At the ESRF a three field name space has been adopted consisting of DOMAIN/FAMILY/MEMBER. A document (see Taurel (1993)) exists which describes device names for the ESRF's Machine Control System. A similar document exists (see Pepellin (1993)) for the Beam Line Control Systems.


Andy Goetz
Tue Jan 28 13:58:13 MET 1997