以超小型PLC為例，新近出產(chǎn)的品種底部尺寸小于100mm，重量小于150g，功耗僅數(shù)瓦。因?yàn)轶w積小很簡(jiǎn)略裝入機(jī)械內(nèi)部，是完結(jié)機(jī)電一體化的抱負(fù)操控設(shè)備。
PLC的作業(yè)原理
當(dāng)PLC投入運(yùn)轉(zhuǎn)后，其作業(yè)進(jìn)程通常分為三個(gè)時(shí)期，即輸入采樣、用戶程序履行和輸出改寫(xiě)三個(gè)時(shí)期。完結(jié)上述三個(gè)時(shí)期稱(chēng)作一個(gè)掃描周期。在全部運(yùn)轉(zhuǎn)時(shí)期，PLC的CPU以必定的掃描速度重復(fù)履行上述三個(gè)時(shí)期。
(一) 輸入采樣時(shí)期
在輸入采樣時(shí)期，PLC以掃描辦法順次地讀入一切輸入狀況和數(shù)據(jù)，并將它們存入I/O映象區(qū)中的相應(yīng)得單元內(nèi)。輸入采樣完畢后，轉(zhuǎn)入用戶程序履行和輸出改寫(xiě)時(shí)期。在這兩個(gè)時(shí)期中，即便輸入狀況和數(shù)據(jù)發(fā)作改變，I/O映象區(qū)中的相應(yīng)單元的狀況和數(shù)據(jù)也不會(huì)改動(dòng)。因而，假如輸入是脈沖信號(hào)，則該脈沖信號(hào)的寬度有必要大于一個(gè)掃描周期，才干確保在任何情況下，該輸入均能被讀入。
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
