A06B-6130-H002，A06B-6130-H002，A06B-6130-H002
以電機控制為例講解PLC梯形圖程序的編程
在所有“應用程序”中，以“梯形圖”的應用最為廣泛。梯形圖程序采用類似繼電器觸點、線圈的圖形符號，容易為從事電氣設計制造的技術人員所理解和掌握。
a） b）
圖1 電動機起停兩地控制邏輯
a） 繼電器控制 b） 梯形圖控制
圖1為用于電動機起停兩地控制的繼電器控制電路和與其控制邏輯等效的梯形圖。在圖1a中，S1和S3，S2和S4分別為相距甚遠的兩個操作臺上的電動機起、停按鈕。K為起動電動機的接觸器線圈。當任一起動按鈕（S1或S2）被按下時，接觸器K得電，并通過其觸點K閉合自保，電動機進入運轉狀態。當任一停止鈕（S3或S4）被按下時，接觸器K失電，其觸點K斷開，電動機停止運轉。這樣，兩個操作臺均可獨立地對電動機起停進行控制。
在圖1b中，當S1或S2節點閉合時，K線圈輸出，并通過節點K閉合自保。當S3或S4節點斷開時，K線圈無輸出，節點K亦斷開。
由上例可見，梯形圖的控制邏輯結構及工作原理與繼電器邏輯控制電路是十分接近的。
圖2是一段用“梯形圖”表示的簡單的PLC程序。左右兩條豎直線稱為“電力軌”（Power Rail）。梯形圖是電力軌和夾在電力軌間的“節點”（或稱觸點）、“線圈”（或稱繼電器線圈）、“功能塊”（功能指令，圖中未畫）等構成的一個或多個“網絡”。在左右電力軌間的梯形圖的一個網絡且包括電力軌稱為一個‘梯級’（Rung）。每個梯級由一“行”或數“行”構成。例如圖2的梯形圖由兩個梯級構成。上一個梯級只有一“行“，含有三個“節點”和一個“線圈”。下一個梯級由三“行”構成，含有四個“節點”和一個“線圈”。
0
ALLEN BRADLEY AC SERVO MOTOR MPL-A310P-HK22AA ANA
ALLEN BRADLEY AC DRIVE 1336S-A007-AA-EN4-HA1-L6 *POSSIBLY BURNED OUT FAN*
Allen Bradley AC Bulletin Constant Torque 3-Phase AC Drive 1336
Allen Bradley 966537 01 96653701 Main Processor 976332-01 Rev A 976331-01 -
ALLEN BRADLEY 8-AXIS SERCOS INTERFACE MODULE 1756-M08SE SER. B 1756M08SE
Allen Bradley 836C63J **GENUINE** AB 836 C63J
Allen Bradley 836C62J **GENUINE** AB 836 C62J
Allen Bradley 815-EOV16 Overload Block w/ Manual Reset / Overload Relay
ALLEN BRADLEY 800H-2ZHQ 800H2ZHQ
Allen Bradley 800H2HAR **GENUINE** AB 800H 2HAR
Allen Bradley 8000XKBM PC BOARD IS REPAIRED WITH A 30 DAY WARRANTY
Allen Bradley 8000-GG KEY BOARD UNIT IS REPAIRED WITH A 30 DAY WARRANTY
ALLEN BRADLEY 77129-207-55 7712920755
ALLEN BRADLEY 7300-VPB-2 7300VPB2
ALLEN BRADLEY 700-PK4800A1 700PK4800A1
ALLEN BRADLEY 700DC-PK1200Z1 700DCPK1200Z1
Allen Bradley 700DC-PK1200DZ24 Industrial Relay 600VDC 10A ! WOW !
Allen Bradley 6181P-12TP2KH VersaView 1200P Operator Interface Panel Ser. B
ALLEN BRADLEY 6180-EIIEGMDHFCZ SER B IND. COMPUTER
Allen Bradley 509-DOC Starter 90 Amp 575-600V ! WOW !
Allen Bradley 509-DAD Starter 90 Amp 120VAC ! WOW !
Allen Bradley 509-COD-XXX 509CODXXX Starter Series B - No Box
Allen Bradley 509-BAC-6P Starter Size 1 600V ! !
Allen Bradley 509ACD **GENUINE** AB 509 ACD
ALLEN BRADLEY 509-AAA-6 509AAA6
Allen Bradley 505V-DOD 505VDOD Motor Starter Size 3 90 Amp 600 V 50 HP 120V Coil
ALLEN BRADLEY 500-DOD-940 500DOD940
Allen Bradley 440R-G23067 MSR10RD Fixed Delay Safety Relay 24/110/230V ! WOW !
Allen Bradley 2711P-T6M20D Series C PanelView Plus 600 WITH MOUNTS
Allen Bradley 2711P-RP1 Series E PanelView Plus Logic Module 64MB FLASH 64 RAM
Allen Bradley 2711P-RN15C | Tested with 12 month warranty
Allen Bradley 2711-K5A1 Operator Interface Panel ! WOW
Allen Bradley 2711-B6C5 /B PanelView 600 Touch/Color/Keypad/RS232(DH-485) Qty
Allen Bradley 2711-B5A5 PanelView550 Monochrome Touch Keypad Operator 5.5" ! WOW
Allen Bradley 2711-B5A2 Panelview 550 Ser. C
Allen Bradley 2707-L8P2X Data Loader DTAM Plus ! WOW !
Allen Bradley 2706-E23J32X1 Dataliner 85-264VAC 50/60HZ 45VA ! WOW !
Allen Bradley 2705-K11C1 RediPanel Operator
Allen Bradley 2705-K11C1 RediPanel - Excellent / Original Box
Allen Bradley 2700C-S2 Circuit Board Series B -
ALLEN BRADLEY 22F-D6P0N103 22FD6P0N103
ALLEN BRADLEY 20-COMM-R SERIES A REMOTE I/O * IN A BOX*
ALLEN BRADLEY 20AD2P1A0AYNNNNN 20AD2P1A0AYNNNNN
ALLEN BRADLEY 20A D 011 A 0 AYNANNN POWER FLEX 70 20AD011A0AYNANNN Clean Unit!!
Allen Bradley 2098-DSD-030x /B | Ultra 3000i Indexing Servo Drive Mfg -2014
Allen Bradley 2098-DSD-005x /C | Ultra 3000 Indexing Servo Drive *NIB*
ALLEN BRADLEY 2093-AMP5 2093AMP5
Allen Bradley 2093-AC05-MP5 | 3KW Kinetix 2000 Integrated Axis Module
Allen Bradley 1794-L34 /A 1794L34 FlexLogix Proc Module Ethernet COMM
ALLEN BRADLEY 1791ES-IB16 1791ESIB16
ALLEN BRADLEY 1784-PKTS 1784PKTS
Allen Bradley 1779KP3R B Data Highway II Interface P/N 440048201 VGC!!!
ALLEN BRADLEY 1774-TB2 SER B PC BOARD IS WITH 30 DAY WARRANTY
Allen Bradley 1771-WS /B Weigh Scale Module 1-Ch Qty
Allen Bradley 1771-P7 120/220V Power Supply Module W/o Cable -
Allen Bradley 1771P4R Series C Power Supply !!! Factory Sealed Box
Allen Bradley 1771-IXE Series C Thermocouple Millivolt Input Module
Allen Bradley 1771-IS | Multiplexor Module *NIBFS*
Allen Bradley 1771-DR I/O Logic Controller
Allen Bradley 1771-AD 16 Slot I/O Chassis 1771AD Series A - No Box
ALLEN BRADLEY 1770-FD PLC2 FAMIY KEYBOARD F SERIES B
Allen Bradley 1769-OF8C Analog Current Output Module 8-Channel ! AS IS !
Allen Bradley 1769-OF4VI | Analog Output Module
Allen Bradley 1769-OF4 | Analog Output Module *NIBFS*
Allen Bradley 1761-NET-ENI Ethernet Interface
Allen Bradley 1756-OF8 Analog Output Module 8pts 20Pin ! WOW !
Allen Bradley 1756-OF8 | Analog Output Module
Allen Bradley 1756-L64 /B ControlLogix Controller Processor LIMITED TIME SALE!
Allen Bradley 1756-L63 Series B ControlLogix Controller Processor with Key
Allen Bradley 1756-L63 /B 1756L63 PROCESSOR MODULE 8MB
Allen Bradley 1756ENBT Ethernet 10-100M Interface Module-Factory Sealed
Allen Bradley 1756-ENBT | ControlLogix EtherNet Module F/W 6.004 *NNB*
Allen Bradley 1756-EN2F Series B EtherNet/IP FIBER MODULE ControlLogix
Allen Bradley 1756CNB bzw. 1756 CNB Serie D - Kommunikationsprozessor
Allen Bradley 1746-P4 SLC500 Power Supply Module 120/240VAC ! WOW !
ALLEN BRADLEY 1746-NT8 SERIES A SER A FRN 1.40 THERMOCOUPLE/ MV INPUT MODULE
Allen Bradley 1746-NI8 | Analog Input Module FW 2.0 - Mfg 2013 *NIBFS*
ALLEN BRADLEY 1746-NI4 SERIES A ANALOG INPUT MODULE --SA
ALLEN BRADLEY 1745-E101 1745E101
ALLEN BRADLEY 160S-AA-02NSF1P1 160SAA02NSF1P1
Allen Bradley 154A11NB **GENUINE** AB 154A 11NB
ALLEN BRADLEY 1494V-DR611-A 1494VDR611A
Allen Bradley 1494R-N100 Door Mounted Rotary Disconnect Switch ! !
Allen Bradley 1492-CE6 Terminal Block 1492CE6 Series B (Pack of 10)
Allen Bradley 1492-CE6 Terminal Block 1492CE6 Series A (Pack of 10)
ALLEN BRADLEY 1450-SK1 1450SK1
ALLEN BRADLEY 142528 REV.04 BOARD **
ALLEN BRADLEY 1392 DRIVER BOARDS 119468 118605 REMAN
Allen Bradley 1388B-AV10 /B | DC Servo Controller
ALLEN BRADLEY 1336VT-B020-EOP A 20HP AC DRIVE 1336 DRIVE
Allen Bradley 1336VT-B010-EAN-L1 10HP VFD (ESC1103)
ALLEN BRADLEY 1336S-B010-AN-EN-HA2-L4 SER D AC DRIVE 11-14KVA 17A 480V **XLNT**
ALLEN BRADLEY 1336F-BF20CAJ-CP-DS SERIES A 2HP PLUS II SENSORLESS VECTOR DRIVE
Allen Bradley 1336-B003-EOD-L3 Drive 3-Ph 3HP 5.7A 460VAC w/ L3 Encoder ! WOW !
Allen Bradley 1336 Plus II 1336F-BRF75-AA-EN-HAS1-L6
ALLEN BRADLEY 1305-AA02A-HA2 1305AA02AHA2
Allen Bradley 126622 PC Module ! WOW !
Allen Bradley 112C09FCDA1D **GENUINE** AB 112 C09FCDA1D
Allen Bradley 100-B180ND3 Contactor 3Ph 180A 150HP 110/120V Coil ! WOW !
20F11ND3P4AA0NNNNN ALLEN- BRADLEY POWERFLEX 753 AC DRIVE 2 HP 480 VOLT
2015 Allen Bradley 1794-IRT8 Series B Analog Thermocouple RTD W/ Terminal
2015 FACTORY SEALED Allen Bradley 1769-IT6 Thermocouple Millivolt CompactLogix
2014 Sealed 1756-A13 Allen Bradley ControlLogix 13 Slot Rack Chassis 1756A13
2013 1746-NO4I Allen Bradley 1746-N041 SLC 500 Output Analog Module Ser A
2009 BRAND IN BOX Allen Bradley 1771-ASB /E Series E Remote I/O Adapter
1771-PA ALLEN BRADLEY POWER SUPPLY REMANUFACTURED
151907 -Incomplete, Allen-Bradley 100B180NG3 Contactor 180A 3P (NO Contacts)
1492-F1209 ALLEN BRADLEY INSTRUMENTATION
146388 -No Box, Allen-Bradley 1746-N14 Analog Input Module
1326AB-A1G-11, Allen Bradley AC Servo Motor
1 ALLEN BRADLEY 810-A05C 810A05C TIMING RELAY 600 VOLTS
1 ALLEN BRADLEY 1773-L1A PLC-4 MICROTROL PROGRAMMABLE CONTROLLER NNB
** IN BOX** Allen-Bradley 1756-ENBT ControlLogix Ethernet/IP Bridge Module
*** FACTORY SEALED**FEB 2013*** ALLEN BRADLEY 1771OD16 SERIES B OUTPUT MODULE
* Tested * Allen Bradley 1794-L33 FlexLogix Processor
* 2014 * Allen-Bradley 1756-PB72 Series C, ControlLogix DC Power Supply
#SLS1B16 Allen Bradley Starter Box 512-AJB-6P-24R #6731LR
