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Common controls (CMNCTRL)
The CMNCTRL function consists of two parts. The former part (CMNCTRL1) is used to
prevent double-commands, which are forbidden, by the use of select-states for the respective
control functions. The latter part (CMNCTRL2) is served as a mediator to provide a bridge
between functions.
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Note: The implementation of particular features is dependent upon the selection of
hardware and the configuration of functions. Several IED models do not support certain
features. To determine whether a particular feature has been implemented within an IED,
identify the IED ordering number; and check the order number for the “G&T position” whilst
referring to the comparison table below. For more information, see
Appendix: Ordering
.
Table 3.4-1 Comparative table in respective ordering numbers
✓: Applicable NA: Not applicable