描述
控制规模还与输入、输出电路数有关。如控制规模为1024点，那就得有1024条I/O电路。这些电路集成于I/O模块中，而每个模块有多少路的I/O点总是有数的。所以，规模大，所使用的模块也多。
控制规模还与PLC指令系统有关。规模大的PLC指令条数多，指令的功能也强，才能应付对点数多的系统进行控制的需要。
Wicat 150WS Z80 Z8002 2716 EPROM Rare Chip Graphics CPU
Wicat 150WS Graphics Video Card 1982 Intel D8275
Wicat 150WS 1982 Z80 MultiBUS 6522 S150 I/O Controller
Wicat 150WS 1982 Z80 MultiBUS Memory Card TMS4164 TMM
Wicat 150WS 1982 Z80 MultiBUS MFM Disk Controller Card
Canon Canonical H04524-002 030-0980-002 Network Card
Quantum ProDrive 40S SCSI Hard Drive 50-pin 940-40-9402
Hard Drive Quantum Q250 SCSI Apple 40MB 50-pin 76-45004
LaserMaster ColorTalk II ISA Controller ColorTalkII LC2
Motherboard DASN1CMB6D0/D 5325301541 Snap Server 4400
Control Systems Hostess ISA Card quad RS-232 Serial
Hard Drive Western Digital Caviar 2850 99-004178-014 WD
Hard Disk Drive Conner FK9LJYJ CFS541A STY04 HDD
HD Drive Western Digital WD Caviar 14300 AC14300-00RTT2
Hard Disk Drive Fujitsu MPF3102AT CA05423-B321 CAVA01
