AutomationDirect (Cumming, GA) has added two new feature-enhanced CPUs to its DirectLOGIC DL405 programmable logic controller product line. The D4-454 and D4-454DC-1 provide all the capabilities of the D4-430, D4-440 and D4-450 CPUs, using updated microprocessor technology, allowing the D4-454 to be the CPU of choice for the DL405 family. Features of the CPUs include:
- A built-in power supply and four communication ports.
- A large amount of program memory, advanced diagnostics and a substantial instruction set and that includes drum sequencers, ASCII output, floating point math, trig functions, bit of word manipulation, timed and hardware-triggered subroutines, For/Next loops, fill-in-the-blank PID control and more.
The memory of the D4-454 is fully contained in the CPU and stored in non-volatile MRAM memory. No memory card is required. A readily available coin-style battery is used for retention of the Real Time Clock.