描述
这也是使PLC的冗余不如DCS的原因。DCS是在运算放大器的基础上得以发展的。把所有的函数、各过程变量之间的关系都作成功能块（有的DCS系统称为膨化块）。70年代中期的DCS只有模拟量控制。如TDC2000系统，一个控制器一秒钟内能完成8个PID回路的运算。首先应用的是化工行业。
K & T / Gemini D Controller Board # 1-20601 CMUX
K & T / Gemini D I/O Controller Board # 1-21294
Federal Pacific 27 KVA 3 PH. Transformer 460/230Y-133
Giddings & Lewis Pic Turbo Processor 503-17600-00
GE Fanuc AC Servo Motor, #A06B-0313-B703-R, Model OS
GE Fanuc AC Servo Motor, #A06B-0313-B703-0075, Model OS
FANUC PC Board, # A16B-2201-0851, WARRANTY
Cincinnati Milacron Circuit Board 3-533-0145G WARRANTY
Cincinnati Milacron PC Board 3-531-4045A WARRANTY
Mitsubishi Mazak Comm. Circuit Board 03-81579-02 PCB
Samsomatic Main Control PCB Board, # PWA 27-1028
Ross Pneumatic Press Safety Valve # 3573A6162 WARRANTY
Fanuc PCB 10M/T Board Unit, # A16B-1210-0350, WARRANTY
