D4-450 has 16 configurable PID loops, two processors, four communication ports, over 200 instructions, built-in power supply and remote I/O capability, and more than 2ꯠ local and 1귔 remote points.
Central processing unit
PLCDirect (Cumming, GA) has added a new central processing unit (CPU) to its DL405 family designed for applications where both high-speed machine control and PID (proportional integral derivative) functionality are needed.
Jan 31, 1997
Machinery Basics
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