AB 1746-N2B
PLC内部器件有：
I/O继电器，或称映射区。它与PLC所能控制的I/O点数及模拟量的路数直接相关。
内部继电器数，有的称为标志位数，代表着PLC的内部继电器数。它与I/O继电器区相着，有时与后者相进行处理。内部继电器多，便于PLC建立复杂的时序关系，以实现多种多样的控制要求。一般讲，内部继电器数比I/O继电器要多得多。
有的内部继电器还可丢电保持，即它的状态（ON或OFF）、PLC丢电后，靠内部电池仍予以保持。再上电后可继续丢电前的状态。保持继电器可增强PLC控制能力，特别对记录故障，故障排除后恢复运行，更显得有用。 定时器，可进行定时控制。定时值可任意设定。定时器有多少，设定范围有多大，设定值的分辨率又是多少，这些都代表定时器件的性能。
计数器，可进行计数，到达某设定计数值可发送相应信号。可进行什么样的计数，计数范围多大，怎么设定，有多少计数器，则是PLC计数器性能的代表指标。
数据存储区，用以存储工作数据。多以字、两字或多字为单位予以使用，是PLC进行模拟量控制，或记录数据所*的。这个存储区的大小代表PLC的性能也是越大越好。趋势也是越来越大。小型机也如此。如日本OMRON公司的CQM1机，其DM区就有6k字。而过去同是小型机的C60P的DM区才64个字。大型机的DM可达10K以至几十K。
此外还有其它一些内部器件，了解某PLC性能时，也都必须掌握它。
内部器件也是PLC指令的操作数，不弄清楚是无法编程的。
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FARRAND 51 & 1/2" O.A.L. TAPE SPAR LINEAR SCALE 218052-15-1038
TOL-O-MATIC B3W LINEAR BELT DRIVE ACTUATOR WITH MOTOR, NNB
NSK 80" O.A.L. LINEAR BALL SCREW W5016-1987-C5Z 05L5-0005
INA LINEAR BEARING PR 14032 GR3, NIB
54" O.A.L. PRECISION BALL SCREW M-127
THOMSON ROUND LINEAR CASE SHAFT 25MMSOFTX1500MM?, NIB
THK CAM FOLLOWER CFH12MA / 350910 A NIB
THREAD CRAFT INC T-4073 COMMERCIAL BACKLASH BALL SCREW 50 OAL 2? DIA NIB
THOMSON ISO 9000 SUPER PILLOW BLOCK BEARING NIB SPB160PN
SAGINAW 31" LENGTH 3" DIAMETER SHAFT BALL SCREW, NO LABEL, SEE PHOTOS
LEAD SCREWS INTERNATIonAL 40" O.A.L. PRECISION BALL SCREW M447
THK 92" O.A.L. LINEAR MOTION SYSTEM YS 7F27
THREAD CRAFT INC T-6235 COMMERCIAL BACKLASH BALL SCREW 58 OAL 51 TRAV 2? DIA NIB
STAR 83.5" 28-HOLE LINEAR GUIDE RAIL 48-10-1608, RUST
94" O.A.L. PRECISION BALL SCREW C-246
DEUTSCHE STAR RUNNER BLOCK / ROLLER RAIL 1853-613-10, SEALED
20TH CENTURY MACHINE 120" O.A.L. PRECISION BALL SCREW FS-127920-2000
THOMSON A162536 LINEAR BALL BEARING, NNB
PRECISION BALL SCREW 74" O.A.L. FS127920-0800-1?268-02H1
GEORG FISCHER DOUBLE ACTING ACTUATOR
LINEAR ROLLER BEARING LMUWF16
NUMATICCS, LINEAR ACTUATOR SH10606LB16DS3, K13409
PARKER PNEUMATIC ACUATOR VAVLE P5T-J063DHSN050 SEALED
THK KS PRECISION BALLSCREW 9D22
THK LINEAR GUIDE RAIL NIB SHS35C3SS+840L / UCG00264 101075
THK HSR55 LINEAR BLOCK BEARING
STAR LINEAR BEARING 067-20
THK LINEAR GUIDE BLOCK NIB HSR45CA1SSS(GK) 101815
DUFF-NORTON WORM GEAR ACTUATOR LM3704-57L W/ STEARNS BRAKE 1-055-511-04-BQ?F
THREAD CRAFT INC T-1161 COMMERCIAL BACKLASH BALL SCREW 40 OAL 37 TRAV 2? DIA NIB
40" O.A.L. PRECISION BALL SCREW 89988
PARKER ORIGA SYSTEM PLUS PNEUMATIC DRIVE CYLINDER P5P00000C500-03?353 102624
DR. JOHANNES HEIDENHAIN 1840MM LINEAR ENCODER 216 750 HL
BELOIT CORP. SCREW JACK 274815D051
LINMOT LINEAR GUIDE PS01-48X240 / 0150-1975 *PLUG*
NIPPON THOMPSON IKO LINEAR BEARING, LRW50 E71
HYTORK-130 ACTUATOR 120PSIG
FESTO 12 MM BORE, 270° ANGLE ROTARY ACTUATOR DSM-12-270-P-FW?-CC
REXROTH LINEAR SLIDE BEARING R182443110
INA LINEAR MOTION BEARING KH1026/P/PP
EMCOR 36" O.A.L. PRECISION BALL SCREW E-6428
INA LINEAR BEARING KH3050IPIPP
EMCOR E-6696 58" PRECISION BALL SCREW
EMCOR 42" O.A.L. PRECISION BALL SCREW C-066
PARKER ORIGA SYSTEM PNEUMATIC LINEAR DRIVE SYSTEM 102629
THK 171&11/16" O.A.L. 55 HOLE LINEAR GUIDE WAY RAIL W/ (2) IKO BEARING BLOCK
BELOIT CORP. 15-TON SCREW JACK 274817D023-0-00?4
ACCUGLIDE CG35CEAN LINEAR BLOCK BEARING, NIB
NB LINEAR BEARING TWA-16UU
26" O.A.L. PRECISION BALL SCREW 052243
THOMSON ACCUGLIDE RG25NL0260 348660-81 LINEAR RAIL, NNB
FESTO DGP LINEAR DRIVE DGP-40-1300PPVA?B-SL010179
THREAD CRAFT INC T-8310 COMMERCIAL BACKLASH BALL SCREW 50 OAL 44 TRAV NIB
STAR / REXROTH 1807-203-31 236MM LINEAR ROLLER GUIDE RAIL, NNB
STAR / REXROTH 1807-203-31 LINEAR ROLLER GUIDE RAIL, NNB
THREAD CRAFT 39.55" 1.5 DIAMETER PRECISION BALL SCREW T-4947
36.562" O.A.L. PRECISION BALL SCREW 80198 / C-160
THOMSON SAGINAW 17.5" PRECISION BALL SCREW A-5409
THREAD CRAFT INC T-1284 PRECISION PRELOADED BALL SCREW 41 OAL 38 TRAV NIB
BARNES INDUSTRIAL BWO35342 120694 25?" BALLSCREW, NIB
PRECISION BALL SCREW 70260 NIB
THREAD CRAFT PRECISION BALL SCREW ?-16988
BELOIT CORP. SCREW JACK 274822D026
42" O.A.L. PRECISION BALL SCREW C-270
48" O.A.L. PRECISION BALL SCREW A-60292
STAR / REXROTH 1807-203-31 356MM LINEAR ROLLER GUIDE RAIL, NIB
THREAD CRAFT INC T-2569 COMMERCIAL BACKLASH BALL SCREW 38 OAL 30 TRAV NIB
THK LINEAR GUIDE RAIL NIB SHS-800L(GK) / UCG02891 101077
44'' LINEAR GUIDE RAIL
THOMSON INDUSTRIES, INC SUPERSLIDE SYSTEMS POSITIonING SLIDE, 37" OAL; 32" TRAV
REXROTH STAR RUNNER BLOCK/ BALL RAIL 1623-214-20 NIB
THOMPSON SUPER 24 BALL BEARING LINEAR BUSHING NIB
20TH CENTURY MACHINE 104" O.A.L. PRECISION BALL SCREW FS127920-1600
DAYTRonIC LINEAR SENSOR DS6000A
THREAD CRAFT INC T-4013 COMMERCIAL BACKLASH BALL SCREW 38 OAL 29 TRAV NIB
THREAD CRAFT INC T-5736 COMMERCIAL BACKLASH BALL SCREW 48? OAL 45? TRAV NIB
CAIPO DIS 10292 35 X 30 SCREW ACTUATOR
BELOIT CORP. SCREW JACK 274817D023-0-00?5
THREAD CRAFT T7425 74" O.A.L. PRECISION BALL SCREW CP#2.25X500x74
THREAD CRAFT INC T-1526 COMMERCIAL BACKLASH BALL SCREW 49 OAL 42 TRAV NIB
THREAD CRAFT INC T-6235 COMMERCIAL BACKLASH BALL SCREW 49 OAL 42 TRAV NIB
1244.5MM O.A.L. PRECISION BALL SCREW C-264
IKO 13-HOLE LINEAR GUIDE RAILWAY LWH 55 101018
IAI SINGLE AXIS ROBOT LINEAR ACTUATOR ISA-SXM-0-0-100?0-AQ
EMCOR 47.812" O.A.L. PRECISION BALL SCREW E-6630
FESTO 63MM BORE 500MM STROKE LINEAR DRIVE DGP-63-500-PPVA?-B
HEIDENHAIN 620MM, LINEAR SCALE LS 704
TEMPOSonIC R SERIES LINEAR-POSITION SENSOR RHT0065UD601V01
INGERSOLL-RAND ARO 1/4 TON SERIES 7700 ROLLER CHAIN HOIST 7718E-2C10-C6S
INGERSOLL-RAND ARO 1/4 TON SERIES 7700 ROLLER CHAIN HOIST 7718E-2C10-K6
IDEAL .69-1.25D, SAE SIZE 12, CLAMP 62M12, BOX OF 10 *NEW*
