描述
将输入继电器的触点想象成对应的外部输入设备的触点，将输出继电器的线圈想象成对应的外部输出设备的线圈。外部输出设备的线圈除了受PLC的控制外，可能还会受外部触点的控制。用上述的思想就可以将继电器电路图转换为功能相同的PLC外部接线图和梯形图。
PMI Kollmorgen S6M4H ServoDisc Servo Disc DC Motor
PMI Kollmorgen S6M4H/S6T ServoDisc DC Motor
Panametrics XMT868-2-11-TO-0011 Transmitter UPT868
Pacific Scientific SC402-010 Servo Controller
PALL Memtec Filterite Filter Housing LMO20S-1
Oregon Micro Systems (OMS) VMEX-6 VMEbus VME
Opto 22 SNAP-PS5-24DC Logic Power Supply
Opto 22 Parallel Addressable Multiplexer PAMUX II
National Inst. AT-MXI MXIbus ISA Interface Card VME
National Display Systems (NDS) Monitor D.W. Fritz
Motorola MVME 167 Board MVME167-32A Mainframe Board
Motorola MVME 1603-053 MVME1603-053 6U VME Board
Metering Valve / Pumping System of Some Type BRAND NEW
Medical Research Labs (MRL) 360SLx Portable ECG Monitor
