Glossary: Terms in the Selmo system

Term	Meaning
Selmo	Sequence Logic Modelling – model-based control standard
Plant	Overall system/machine with HWZs and central functions
HWZ	Hardware Zone – autonomous unit with operating modes and sequences
SEQ (Sequence)	Modeled sequence of a subprocess (e.g. clamping, pushing)
Zone	Link between model and real signal (Input/Output/In-Out/Mem)
Bit-Control	Matrix: States (rows) ↔ Zones (columns) ↔ Behavior (0, S, i)
S (Sequence Check)	Expected action or feedback in a state
i (Interlock)	Must-condition – on deviation → error + stop
0	No meaning in this state
CMZ	Constantly Monitoring Zone – state-independent safety monitoring
MXIC	Manual Cross Interlock – release condition for manual buttons
Parameter	Data values such as times, counters, positions – as IN / OUT / INOUT
Logic Layer	State model: sequence control
System Layer	Behavior model of the zones (Bit-Control)
Parameter Layer	Data interface to HMI, OPC UA, etc.
SDEA	Structured Deterministic Extended Automaton – the formal model concept
SEQ Control	HMI module for control, diagnosis and navigation within a SEQ