描述
外部DC24V电源若输入回路有DC24V供电的接近开关、光电开关等，而PLC上DC24V电源容量不够时，要从外部提供DC24V电源；但该电源的“—”端不要与PLC的DC24V的“—”端以及“COM”端相连，否则会影响PLC的运行。
Crestron MPS-300 PROFESSIONAL MEDIA Control System
ALLEN BRADLEY 1785-L20E SERIES D 1785L20E ETHERNET
^ Topspin 120 24 Port Switch – CISCO
Akashi VEF Vacuum Evaporator
SORVALL ULTRACENTRIFUGE OTD65B CENTRIFUGE
HP 66000A MPS MAINFRAME – 66103A-66101A-66106A-16A MODS
Canon BJ-W9000 wide format Printer w/ IMAGEPASS W20
*NUAIRE NU 430 600 CLASS II B2 BIOLOGICAL FUME HOOD
GRAPHTEC CS2000 LARGE FORMAT SCANNER
