PLC电源用于为PLC各模块的集成电路供给作业电源。同时，有的还为输入电路供给24V的作业电源。电源输入类型有：交流电源（220VAC或110VAC），直流电源（常用的为24VDC）。

底板或机架

大多数模块式PLC运用底板或机架，其效果是：电气上，完结各模块间的联络，使CPU能拜访底板上的一切模块，机械上，完结各模块间的衔接，使各模块构成一个全体。
PLC英文全称Programmable Logic Controller ,中文全称为可编程逻辑操控器，界说是:一种数字运算操作的电子体系，专为在工业环境运用而规划的。它选用一类可编程的存储器，用于其内部存储程序，履行逻辑运算,次序操控，守时，计数与算术操作等面向用户的指令，并经过数字或模拟式输入/输出操控各种类型的机械或出产进程.PLC是可编程逻辑电路，也是一种和硬件联系很紧密的言语，在半导体方面有很首要的运用，能够说有半导体的当地就有PLC

PLC是一种专门为在工业环境下运用而规划的数字运算操作的电子设备。它选用能够编制程序的存储器，用来在其内部存储履行逻辑运算、次序运算、计时、计数和算术运算等操作的指令，并能经过数字式或模拟式的输入和输出，操控各种类型的机械或出产进程。PLC及其有关的外围设备都应该按易于与工业操控体系构成一个全体，易于拓展其功用的准则而规划。

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