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D4-440DC-1 is a central processing unit (CPU) module developed by Automation Direct, Facts Engineering, and Koyo. A member of the DirectLogic 405 series, this module can interface with all programmable logic controllers in the same series. No memory is built into the system, but separately purchased memory cards are available. A DC powered module, an input range of 20 to 28 VDC is supported.
Built for fast boolean execution and optimal communication, D4-440DC-1 provides a user friendly experience. Two communications ports are built into the module for programming and network connectivity. The first port exclusively provides a port for programming the module. A 15 pin input, Port 1 supports RS232 inputs with a 9600 baud. A variety of programming devices including personal computers, handheld programmers, and other operator interfaces are supported using this port. Port 2, conversely, is a slave only input. A 25 pin auxiliary port, this connection supports RS232/422 inputs with user selectable baud rates. CPU dipswitches allow the user to select the baud rate of the second port. The front of the module features a CPU keyswitch, allowing selections between RUN, TERM, and STOP. Six CPU status indicators are also found on the front plate. These indicators alert users to successful or unsuccessful PWR, RUN, CPU, BATT, I/O, and COM connections.
Be sure to follow all manufacturer provided installation and storage parameters. All wiring and installation instructions and diagrams are easily accessible in both the series manual and device datasheet. Technical support for this module was provided by the original manufacturers, Automation Direct and Koyo.
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