描述
梯形图两侧的垂直公共线称为母线(Busbar)，。在分析梯形图的逻辑关系时，为了借用继电器电路图的分析方法，可以想象左右两侧母线（左母线和右母线）之间有一个左正右负的直流电源电压，母线之间有“能流”从左向右流动。右母线可以不画出。
Emerson / Motorola MVME 1600-001 Single Board Computer
Powerware Ferrups Best External Transfer Switch (NEW)
DAINIPPON SCREEN Power Supply/Controller CERD-8012-X2
BALDOR RIGHT ANGLE AC GEARMOTOR Torque: 90, Ratio: 40:1
OMRON Input Unit CJ1W-ID261. 24V DC, 4mA, Class 2 Only
National Instruments GRIB/TNT IEEE 488.2 Interface & SW
ULVAC SINKU KIKO Diaphragm Vacuum Dry Pump DAP-15
GALIL DMC-1414 Single Axis Motion Controler Plus Amp
AMPRO Baseboard, ETX without FX8C. 8554026B
Ergotron 200 Series Combo Mounting Kit Keyboard & Mouse
