PSI System Controls and Diagnostics
F3200E User Manual
F3200E_UM_180726 Page 64 of 107
Figure 53. System.xml example.
The convention of “wires” for Pyramid device process variables, and the fixed names of those
wires for each supported product, are described in Pyramid document “ig2_scripting_v#.#.pdf”,
where #.# is the document revision number. The document also describes how you can scale the
values, for example to convert voltages from general purpose I/O devices to physical units
relevant to the item they are controlling, and how you can set up monitoring against tolerance
bands.
The choice of a corresponding working name for each wire is up to the user; you may wish to
choose something descriptive that is relevant to what you are measuring or controlling. We
nevertheless recommend a naming convention that makes it clear whether a value is a readback
or control (the prefixes c_ and r_ are used in the example), which particular device the value is
associated with, and a number or letter to indicate the channel for multichannel devices.
