3.8 Methods
The Foundation Fieldbus specification provides for the use of so-called methods to
simplify the operation of the device. A method is an interactive sequence of steps that
must be followed in order to obtain a particular function from the device.
Thus, for example, the steps given in Chapters 5.2 and 5.3 for the basic calibration of
the device:
• Reset
• Lower Range Value
• Upper Range Value
• Bias Pressure
• Damping
might comprise a method named "Basic calibration step 1". The user could call up
this method to calibrate the device. He need do nothing else but supply the
information which the method asks for as it progresses through each step. The setting
of the block mode, reading, writing and checking of the parameters etc. are
automatically done by the program.
A method is part of the device description supplied with the device. It is intended that
methods will be provided for all Endress+Hauser devices. The current device
description of the Cerabar S, however, does not support methods at this stage.
3 Foundation Fieldbus Interface Cerabar S FF
28 Endress+Hauser
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