梯形图（Ladder Diagram）程序规划言语 
梯形图程序规划言语是用梯形图的图形符号来描绘程序的一种程序规划言语。选用梯形图程序规划言语，程序选用梯形图的办法描绘。这种程序规划言语选用因果联系来描绘事情发作的条件和成果。每个梯级是一个因果联系。在梯级中，描绘事情发作的条件表明在左边，事情发作的成果表明在后面。梯形图程序规划言语是最常用的一种程序规划言语。它来源于继电器逻辑操控体系的描绘。在工业进程操控范畴，电气技能人员对继电器逻辑操控技能较为了解，因而，由这种逻辑操控技能开展而来的梯形图受到了期待，并得到了广泛的运用。 
梯形图程序规划言语的特色是： 
（１）与电气操作原理图相对应，具有直观性和对应性； 
（２）与原有继电器逻辑操控技能相一致，对电气技能人员来说，易于撑握和学习； 
（３）与原有的继电器逻辑操控技能的不一样点是，梯形图中的能流（Power FLow）不是实践含义的电流，内部的继电器也不是实践存在的继电器，因而，运用时，需与原有继电器逻辑操控技能的有关概念区别对待； 
（４）与布尔助记符程序规划言语有一一对应联系，便于彼此的改换和程序的查看。 

ABB 900060  DDR Switch cable
ABB 3HAB2136-1  Teach pendant S3
ABB 3HAB2151-1  Teach pendant S3
ABB 3HAB2477-1  Floppy drive S2/S3
ABB 3HAB2480-1  Floppy drive S4
ABB 3HAB5386-1  Teach pendant S4
ABB 3HAC14441-9  CMOS-battery
ABB 3HNE00311-1  Teach pendant S4C
ABB 3HNE00313-1  Teach pendant S4C
ABB 4944016-2  Battery S3
ABB 4944026-2  Battery memory board S2
ABB YB161100-LH  Teach pendant S2
ABB YB560100-EA  Teach pendant S3
ABB YB560101-LA  Power supply
ABB YT212002-BA  Rectifier
ABB YT212002-C  Rectifier
ABB YT212002-X  Rectifier
ABB YB560103-CB DSQC236B DriveUnit
ABB YB560103-CC DSQC236C DriveUnit
ABB 3HAB2207-1 DSQC236D DriveUnit
ABB YB560103-CD DSQC236G DriveUnit
ABB 3HAB2207-1 DSQC236P DriveUnit
ABB YB560103-CE DSQC236T DriveUnit
ABB YB560 103-CL/5 DSQC241 PowerUnit
ABB 3HAB 2210-1 DSQC300 Robot Computer
ABB 3HAB 2216-1 DSQC314B PowerUnit
ABB 3HAB 2219-1 DSQC316 Main Computer
ABB 3HAB 2220-1 DSQC317 6MB Card
ABB 3HAB 2236-1 DSQC321 4MB Card
ABB 3HAB 5956-1 DSQC323 8MB Card
ABB 3HAB 5957-1 DSQC324 16MB Card
ABB 3HAB 2241-1 DSQC325 Main Computer
ABB 3HAB 2242-1 DSQC326 Robot Computer
ABB 3HAB7229-1 DSQC328 I/O Card
ABB 3HAB 6182-1 DSQC335 Robot Computer
ABB 3HAB8101-3/05D DSQC345B DriveUnit
ABB 3HAB8101-3/08C DSQC345C DriveUnit
ABB 3HAB8101-7/01C DSQC346C DriveUnit
ABB 3HAB8101-8 DSQC346G DriveUnit
ABB cable DSQC351 Interbus-S
ABB 3HAC 0373-1 DSQC361 Main Computer
ABB 3HAC3180-1 DSQC373 Robot Computer
ABB 900054 1Gb SD-card S3/S4 DDR
ABB 900056 1Gb SD-card S2 DDR
3HNE 00026 Teach Pendant
3HNE 00312-1 Teach Pendant
3HNE 00313 Teach Pendant
CHAA 3560-AXA Teach Pendant
ABB 3HAB9271-1/01B DriveUnit Dummy DriveUnit Dummy
ABB 57510001-AA DSCA 114 Print out board
ABB 57520001-U DSCA 121 Communication board
ABB 57160001-A DSDI 110 Digital input board
ABB 57160001-K DSDO 110 Digital output board
ABB YB161102-AH DSDX 110 Digital in/output board
ABB 57160001-TP DSDX B001 digital in-output board
ABB 57360001-U DSMB 124 Semiconductor memory board
ABB 57360001-AN DSMB 125 Semiconductor memory board
ABB 57360001-HG DSMB 127 Memory board
ABB 57330001-N DSMC 110 Floppy disk controller
ABB YB161102-AK DSPA 110 Axis computer
ABB 57310256-AF DSPC 150 Central processor
ABB 57310256-BA DSPC 153 Expand. single board computer
ABB 57310001-GP DSPC 157 Expand. single board computer
ABB YB161102-AD DSQC 103 Resolver power board
ABB YB161102-AF DSQC 105 Display board
ABB YB161102-BA DSQC 110 Programming board
ABB YB161102-BS DSQC 115 Resolver power board + 2 analogue
ABB YB161102-BE DSQC 116 Power supply
ABB YB161102-BG DSQC 117 Resolver power board
ABB YB161102-BU DSQC 124 Terminal unit
ABB YB161102-BV DSQC 129 R/D board
ABB YB161102-CH DSQC 136 Safety board
ABB YB161102-CM DSQC 138 Terminal unit
ABB YB560103-AC DSQC 202 Robot computer
ABB YB560103-AS DSQC 208A External axis board
ABB YB560103-AL DSQC 209 Analogue I/O board
ABB YB560103-AM DSQC 210 Safety board
ABB YB560103-AN DSQC 211 Power supply
ABB YB560103-BF DSQC 215 Robot computer
ABB YB560103-AZ DSQC 220 Programming board
ABB YB560103-BD DSQC 223 PC Board digital I/O
ABB YB560103-BE DSQC 224 PC Board combi I/O
ABB YB560103-BK DSQC 227 Winchester interface
ABB YB560103-BD DSQC 228 Safety board
ABB YB560103-BN DSQC 230 Robot computer
ABB YB560103-BS DSQC 233 External axis board
ABB YB560103-BY DSQC 235A Rectifier
ABB YB560103-BZ DSQC 235B Rectifier
ABB YB560103-CA DSQC 236A Drive unit
DSQC 236B Drive
ABB YB560103-CC DSQC 236C Drive unit
ABB 3HAB2207-1 DSQC 236D Drive unit
ABB YB560103-CD DSQC 236G Drive unit
ABB 3HAB2245-1 DSQC 236H Drive unit
ABB 3HAA3563-AJA DSQC 236P Drive unit
ABB YB560103-CE DSQC 236T Drive unit
DSQC 239 Board - ABB RIO
ABB  DSQC 241 Power supply
ABB YB560103-CM DSQC 242 Programming board