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Redundancyin general means the existence of more than one capability of an item (system,
apparatus, component) to perform its intended function.
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A slot means:
1. The place in the subrack where you put a PRGXOH.
2. The place in a VXEPRGXOHFDUULHUwhere you put a submodule.
Formally, for example, in data base elements, the terms POSITION and SUBMODULE
POSITION are used instead.
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A submodule carrier is a module (circuit board) which houses smaller PRGXOHV(submodules).
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According to IEC 916, subracks are the mechanics which house rows of boards. Different types
of subracks are available, for example controller subrack, I/O subrack.
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Type circuit is an application-specific standard solution in connection to controller
configuration. The scope of a type circuit is the controller data base and the PC program.
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Warm start is a type of booting on controllers, which means resetting of dynamic information in
PC programs and the data base.