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Optical Synchronization Section 5-4
5-4 Optical Synchronization
The synchronization between the MS4800 system transmitter and receiver is
optical, so the system does not use one specific beam. To establish synchro-
nization the system needs to have a certain number of consecutive clear
beams (see following table) within the first master segment. If they are not sat-
isfied, the system will enter a MACHINE STOP state and every other Individ-
ual Beam Indicator will light. When the beams are cleared, the system will re-
synchronize itself and enter a state consistent with its operating mode. Once
the synchronization is established, it can be maintained as long as the
required number of consecutive clear beams can be satisfied anywhere in the
system (including flex segments).
Because of these restrictions, when programming a fixed blanking object(s),
the size of the fixed or monitored blanking object(s) (8 beams +/- 1 beam
tolerance) must comply with the number of consecutive clear beams stated in
the previous table within the first master segment.
In addition to that, any fixed or monitored blanking programming must be done
with at least one (1) clear beam on each flex segment.
Example:
A MS48000S-EA-014-1320 has 132 beams. In blanking application,
10 consecutive beams have to be free for optical synchronization. The
remaining 122 beams can be used for fixed blanking applications (max
8±1 beams).
Light Curtain Beam Count Synchronization Beam Requirement
12 - 16 beams 6 consecutive clear beams
17 - 32 beams 7 consecutive clear beams
33 - 64 beams 8 consecutive clear beams
65 - 128 beams 9 consecutive clear beams
129 - 256 beams 10 consecutive clear beams
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