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
• Eight RS-232 communications ports.
• Power bus.
• Expansion bus.
• Selectable master.

Benefits
• Isolated interface to eight SmartMotors without daisy chain propagation delay penalty.
• Fused interconnection to up to eight SmartMotors.
• Allows interface to other DIN rail adapters for expanded capability.
• 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)