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DIN
- RS232
The
DIN-RS232 is a DIN rail mount breakout for SmartMotor RS-232 communications.
It allows a single master to communicate with up to eight SmartMotors
over RS-232 without the loss of bandwidth typical of daisy chain
propagation. Since this operation is nearly identical to the operation
of a RS-485 bus, the DIN-RS232 can also accommodate an RS-485 master.
It can also be used in a multi-axis system where one of the SmartMotors
is the host instead of a computer or PLC. 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 SmartMotor
breakouts are electrically isolated from the master, and are individually
powered by its associated SmartMotor. 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 SmartMotors 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 SmartMotors
on this unit as if they were on a parallel communications bus, like
RS-485. While the user can transmit to all SmartMotors on the bus
simultaneously, care must be taken to assure that no two SmartMotors
reply at the same time. The DIN-RS232 also has a fused power bus
to allow the convenient connection of SmartMotors 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 SmartMotors
without daisy chain propagation delay penalty.
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Fused interconnection to up to eight SmartMotors.
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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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