vs | plus

In order to switch the transitions correctly, vs | plus requires an intergreen time matrix. The intergreen times entered in this matrix must be at least equal to the corresponding values in the control unit. Larger values for an intergreen time or an intergreen time specification for not conflicting signals on the control unit can be supplied in vs | plus. 

Intergreen times are the times between the end of a display element turning green and the start of a conflicting display element turning green. vs | plus calculates the transitions on the basis of the display elements using the intergreen and offset times. When calculating a transition, vs | plus attempts to switch on the display elements to be switched on as early as possible. If a display element does not have to be switched off immediately due to shorter intergreen times, it is given this additional green in the transition. Exceptions are display elements with a red optimisation of the type "Immediate OFF / without optimisation".

If vs | plus recognises in the stage transition that two conflicting display elements are to be switched to green, only the one that comes first in the editing process is switched. The other, conflicting display element is suppressed. As this can only occur in the event of incorrect parameterisation, an error message (see Fault diagnosis) is sent to draw attention to the problem.

vs | plus is able to work with two different intergreen time matrices in the same data set. To activate this feature, the global flag intergreen time must be activated. 

Basically, the values from the intergreen times matrix are used for display elements in vs | plus. If the closing signal is one that is controlled by a traffic stream of the type "PT", a shorter intergreen time can be used. If vs | plus determines that the PT traffic stream has cancelled correctly via the PT check-out detector, the shorter intergreen time is used. If the check-out took place via the forced check-out, the longer intergreen time is used. For safety reasons, the intergreen time supplied in the control unit cannot be undershot. So if vs | plus switches a "shortened" intergreen time, this is the time that is supplied in the base of the device. The long intergreen time must therefore be correspondingly longer so that a shortening can be achieved and must be supplied in the intergreen times for the display elements.