描述
以上几点应用是着重从质上讲的。从量上讲，PLC有大、有小。所以，它的控制范围也可大、可小。小的只控制一个设备，甚至一个部件，一个站点；大的可控制多台设备，一条生产线，以至于整个工厂。可以说，工业控制的大小场合，都离不开PLC。
Dec M8186 Q-Bus KDF11-A 11/23 CPU Board
54-23153-05 Alpha 3000/700 CPU Board
Meltec Knockdown cpu board
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Bennett Gas Pump Model 8000 Computer CPU Board N5287
Bennett Gas Pump Model 8000 I/F CPU Board N4715
TEXAS CONTROLS CPU BOARD 200165-01 200163-01
Digital Equipment (DEC): B3004-DA, 466MHz CPU Board
HP 376469-001 Processor Module Assy CPU Board DL580 G3
Kaypro Professional CPU Board w/ NEC V20 Chip
SONY APR-5002 APR-5003 CPU BOARD 1-619-161-12 FULL WORK
NEC Proserva PH Dual P166 CPU Board NEW 158-050951-001
