PLC的梯形圖程序一般采用順序控制設(shè)計法來設(shè)計。這種編程方法很有規(guī)律，很容易掌握。對于復(fù)雜的控制系統(tǒng)，設(shè)計梯形圖的時間比設(shè)計相同功能的繼電器系統(tǒng)電路圖的時間要少得多。
PLC的用戶程序可以在實驗室模擬調(diào)試，輸入信號用小開關(guān)來模擬，通過PLC上的發(fā)光二極管可觀察輸出信號的狀態(tài)。完成了系統(tǒng)的安裝和接線后，在現(xiàn)場的統(tǒng)調(diào)過程中發(fā)現(xiàn)的問題一般
給異步電動機提供調(diào)壓調(diào)頻電源的電力變換部分，變頻器的主電路大體上可分為兩類：電壓型是將電壓源的直流變換為交流的變頻器，直流回路的濾波是電容。鄭工199 592 81761

CROUSE-HINDS/COOPER CGB5915 1-1/2''
GE P6257779G2 Electrical Contacts Intermediate MultiBrk Interrupter (T82)
HDS / EWC-MB05-A06-TN(K) / CABLE
SMC / CDQ2A32-35DZ / Cylinder, Length:75, Stroke:35, Scratch
SMC / CDQ2B40-30DCM / Cylinder, Length:70, Stroke:30
SMC / CDQSB20-110-DCR8257R / Cylinder, Length:170, Stroke:110
SMC / CM2B20-180-CJKE0009 / CYLINDER, Scratch
SMC / CQ2A40-150DC-X150 / Cylinder, Length:222, Stroke:150, 
[Used] SMC / MQQTB20-10DM / Cylinder, Length:57.5, Stroke:10,
Ferraz Shawmut Fuse ATQ4 4A 500V
Ferraz Shawmut Fuse ATQ9 9A 500V
ABB PLC module BAMU-01C FedEx or DHL
Autonics rotary encoder E40H10-1000-3-N-24 12-24VDC
CHELIC Multi-solid cylinder NQ16-25-S
MEAN WELL medical grade terminal block module MPM-90-24ST 24V3.75A
WINNER Overflow Valve RD08W20DL
KEYENCE PLC KV-NC10L WITH ONE YEAR WARRANTY FAST SHIPPING
4300829-EA-0001 linear limit protector CC39506NSRS new
46528 BANNER MICRO-SCREEN ESD emitters and receivers board 3763C BANNER Board
6101 T61 Conductive Aluminum Bar, 3/8" (.375") Thick x 4.0" Wide x 12" Length
A.P. Service 103736 Style 7000
AFINE SAL1810000EA01DU Admittance Point Level Sensor
AGASTAT EGPIC2004002 TIMING RELAY
ALLEN BRADLEY 1775-L2 SER. B PLC MAIN PROCESSOR
Alpha wire FIT 221 1.0 Black Qty of 200 per Lot Heat Shrink Tubing and Sleeves
AMP 87175-6 Qty of 106 per Lot 2 CONTACT(S), FEMALE, TWO PART BOARD CONNECTOR,
AMP/ TYCO/ TE 34319 Qty of 100 per Lot Terminal Inline, Individual Openings 
ARROW HART 81715L Qty of 1 per Lot L KEY LOCK SWITCH
ASCO AUTOMATIC SWITCH DF8262C13 CNC 302022
Baldor 1/2 HP 3450 RPM C-Face motor
Banner Engineering Fiber BRSE2.53S, 22823 -
BARTEC LAMP MODULE 07-3353-1130 
Blount 31001609 Replacement Filter Genuine OEM
Board for inverter Abb vca.h0006
Bosch 0001368028-001, 2920123044786 Starter
BOSCH VALVE 0 811 150 210 070 4500 PSI