The Automation Direct Facts Engineering Koyo D4-450DC-2 is a central processing unit (CPU) module. Designed for the DirectLogic 405 series, this device can interface with programmable logic controllers from the same family. An integrated 7.5K of flash memory is included, with extra storage expansion available using memory cards. The power supply required for this module to operate measures at 125 VDC.
An array of communications ports are prominently featured on the module. The first, Port 0, is a programming port. This 15 pin connection supports an RS232 input with a baud rate of 9600. Port 1 and Port 3 are both general purpose ports for D4-450DC-2. Port 1 can accept RS232/422 inputs with a selectable baud rate, while Port 3 inputs RS232/422/485 connections. Baud rates for both connections are user selectable using a programming software. Port 2 is a second programming port featuring a phone jack connection. The jack can accept RS232 inputs with a selectable baud rate maxing out at 38.4Kb. The CPU module scans attached I/O modules for new data to input. This model features three scan options, variable, limited, and fixed, that are selectable by the user. Changes in scan times and speeds can help to accurately measure high speed machines. The module is completed with a CPU keyswitch and six status indicator LEDs.
Following all provided installation and storage parameters will prevent unnecessary device damages. A comprehensive wiring and installation guide for D4-450DC-2 can be found in the series manual and device datasheet. Technical support for this module was originally provided by the manufacturers, Automation Direct and Koyo.
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