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The
DIN-RS232 master communications circuitry can take its power from
any industry standard 24V power supply. The eight communications
links to each of the Servida Motor breakouts are electrically isolated
from the master, and are individually powered by its associated
Servida Motor. This isolation can be critical to reliable systems
where there may be ground bounce in the power runs between the motors.
The DIN-RS232 is able to transmit simultaneously to eight Servida
Motors because all of the links are in parallel. This means that
the eight transmit and receive lines are functionally tied together.
For this reason, the user must treat the eight Servida Motors on
this unit as if they were on a parallel communications bus, like
RS-485. While the user can transmit to all Servida Motors on the
bus simultaneously, care must be taken to assure that no two Servida
Motors reply at the same time. The DIN-RS232 also has a fused power
bus to allow the convenient connection of Servida Motors to a central
power input.
Like all DINIO products, the DIN-RS232 has an expansion bus. This
will allow the master unit to communicate with more motors, eight
at a time, by linking in additional DIN-RS232 units.
Features
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Eight RS-232 communications ports.
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Power bus.
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Expansion bus.
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Selectable master.
Benefits
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Isolated interface to eight Servida Motors
without daisy chain propagation delay penalty.
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Fused interconnection to up to eight Servida
Motors.
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Allows interface to other DIN rail adapters
for expanded capability.
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Choose RS-232 or RS-485 to be the communications
master.
Electrical:
Power
bus line voltage: 19V to 48VDC
Isolated
communications bus power: 4.5V to 5.5V, 35 mA
Mechanical:
Dimensions: see figure
Weight: 15 oz (425 g)
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DIN-RS232