Optical Synchronization - Omron MS4800E Operation Manual

Optical Synchronization

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).
Light Curtain Beam Count
12 - 16 beams
17 - 32 beams
33 - 64 beams
65 - 128 beams
129 - 256 beams
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).
Synchronization Beam Requirement
6 consecutive clear beams
7 consecutive clear beams
8 consecutive clear beams
9 consecutive clear beams
10 consecutive clear beams
Section 5-4
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