The DirectLOGIC 405 PLC series offers several CPU options with two feature-enhanced CPUs, the D4-454 and D4-454DC-1. Each CPU offers a large amount of program memory, a substantial instruction set with drum timers, floating-point math, and built-in PID loops all with advanced diagnostics and several communications ports.
The DirectLogic DL405 D4-454DC-1 CPU
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The DirectLogic DL405 controller offers a wide variety of I/O modules and configurations. You can build a control system with local/ distributed I/O of up to 3,500 points. Use the built-in PID instruction or specialty modules to perform cost-effective process control. The DirectLOGIC DL405 controller offers two feature-enhanced CPUs in this product line, the D4-454 and D4-454DC-1. Both include a built-in power supply and communication ports. Each CPU offers a large amount of program memory, The D4-454 CPUs offer a substantial instruction set and advanced diagnostics
The DirectLOGIC D4-450 CPU is updated to a model D4-454 CPU.
Although the D4-454 CPU contains new electronics, it is a direct replacement for the D4-450 in many ways: