In the case of the master drive, the superimposed traverse frequency is linearly opposite to the limit
Traverse Amplitude 438 and will then reverse its direction. When the direction is reversed, a
proportional jump is effected. Via a handshake signal, the master drive informs the slave drive that
the traverse output has changed its direction. The traverse function of the slave drive has the same
gradient as the traverse function of the master drive, but an opposite sign. When the slave drive
reaches the limit Traverse Amplitude 438 before switch-over of the handshake signal, the
frequency is maintained until switch-over is effected. If the handshake signal is received before the
frequency limit is reached, the direction is reversed immediately.
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