Reduced maximum speed in security zone

In combination with the security zone of an axis the PLC can command a switchover to a reduced maximum path feed to the CNC. The security zone is defined inside of an upper and lower limit of the axis position. The reduced speed functionality gets active with PLC signal, if one axis is inside the security zone or moves into this zone. The CNC reacts in realtime, that means that after an eventually necessary deceleration phase none of the axes moves faster than vb_max_red_zone. This value is independent of current active moving mode (G00 or G01). For each axis two security zones can be defined. This zones can overlap each other.