# Operation

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Description / Mode | Digit 1 | Digit 2 | Digit 3 | Digit 4
Init (start up) | I | n. |  |
Init (start up, leak tight) | I | n. |  | C
Close | C. | C, 0…100 valve position
Open | O.
Pressure control | P.
Position control | A. | C 0 100 | = closed, leak tight = minimal conductance = maximum opened
Interlock Valve closed or open by digital input | I.
Hold (position frozen) | H.
Learn | L.
Safety Refer to «Safety mode» for details. | S.
Power failure | F.