SLS1508

 【DELTAV艾默生   SLS1508 

】

 

【厦门莫格电气自动化有限公司】

 

【本公司拥有所有产品专业检测平台，产品质量严格把关】

【具体询价咨询-卢工】

【电话： （微信同号）】

【】

【采购单10个点您拿单子，追求共赢！】

 

当PLC运行时，是通过执行反映控制要求的用户程序来完成控制任务的，需要执行众多的操作，但CPU不可能同时去执行多个操作，它只能按分时操作（串行工作）方式，每一次执行一个操作，按顺序逐个执行。由于CPU的运算处理速度很快，所以从宏观上来看，PLC外部出现的结果似乎是同时（并行）完成的。这种串行工作过程称为PLC的扫描工作方式。

用扫描工作方式执行用户程序时，扫描是从第一条程序开始，在无中断或跳转控制的情况下，按程序存储顺序的先后，逐条执行用户程序，直到程序结束。然后再从头开始扫描执行，周而复始重复运行。

PLC的扫描工作方式与电器控制的工作原理明显不同。电器控制装置采用硬逻辑的并行工作方式，如果某个继电器的线圈通电或断电，那么该继电器的所有常开和常闭触点不论处在控制线路的哪个位置上，都会立即同时动作；而PLC采用扫描工作方式（串行工作方式），如果某个软继电器的线圈被接通或断开，其所有的触点不会立即动作，必须等扫描到该时才会动作。但由于PLC的扫描速度快，通常PLC与电器控制装置在I/O的处理结果上并没有什么差别。

Spirax Sarco Spiral Wound Gasket SS / graphite 0.5 inch for TD 3-4 /TD 3-4LC NEW

Spirax Sarco Spiral Wound Gasket SS / graphite 0.75 inch for TD 3-4 /TD 3-4LC

Spirax Sarco 0620085 air vent reseating assembly kit for FT models

Spirax Sarco DCV 4 DN 15 ANSI 300 Disc Check Valve BS 7438 NEW

Spirax Sarco 0957155 G01/MW Cover Gasket set for Drayton I/B trap 621/622 NEW

Spirax Sarco 0251682 Gasket set for BPT/SM NEW

Spirax Sarco 0957159 810/BH Cover Gasket set for Drayton I/B trap NEW

Spirax Sarco 671080 Valve & Seat Ass'y for Drayton H11, 200 & 300 IB Traps NEW

Spirax Sarco 0620085 / 709 air vent reseating assembly kit for FT models

Spirax Sarco 676280 Valve & Seat Ass'y for 621,921 622.922, 623 Steam Traps NEW

Spirax Sarco 1" bucket for Spirax Drayton Series 200 and 600 IB traps NEW

Spirax Sarco 628086 Gasket set for 50 mm FT 20 float trap NEW

Spirax Sarco 628086 411/DW Gasket set NEW

Fisher part no. 6048X3-35072 

Fisher part no. 1218X935362

Fisher C3016 SST 

100mm butterfly valve, manually operated (Stock 5557 A&B)

KEYSTONE figure 222 3" lugged SS BUTTERFLY VALVE Disc SS Stem 416 SS Seat EPDM

KEYSTONE FIG 612-DEE2 3" DN80 flanged SS BUTTERFLY VALVE Body D1 NEW

Gate Valve .75 inch Class 800 screw fit : body A105N

TURNFLO T4CS32 3 inch lugged wafer butterfly valve CF8M NEW

STARLINE 135 SGS Ball Valve - DN20 Class 900 Lbs: A105 Ends NPT

NORBRO 10-RKOES-1SJ4-X?29 VNO16470 Auxiliary contact for 40R series Actuator NEW

CRANE 3604XU Gate Valve - Half inch Class 800: A105N /CR13

JOHN 1 inch 1" forged steel Class 800 threaded gate valve

GEMU 2" 2 inch 7110 Teflon lined diaphragm valve

LCM ITALIA 1.25 in FB BALL VALVE F316 A105 800NPT PTFECG

EMICO WCB Ball valve 1.5 IN - Class 800

TURNFLO DN 25 1" MS 50 ball valve CWP 600 PN 40 with flexible hose

APV Half inch Class 800 SW gate valve: R17F 316 NPT- NEW

HYUNDAI Gate Valve - Half inch Class 800: A105N / Stellite

Worcester Flanged ball valve 1 3/4" 1.75 inch BS 5351 Ball 18.10.2 SS / PTFE

STARLINE 135 SGS Ball Valve - DN15 Class 2500 Lbs: A105 Ends NPT

OMB 0.5 inch 1/2" DN 15 forged steel check valve Class 800 105N NPT thread NEW

FISHER CONTROLS Type 289H-42 1" backpressure relief valve 4-15 PSI spring rating

2" Ball valve 2 IN - Class 600 CWP PN40 MS58

blue cartridge filter housing with stainless adaptors to flat face BSM fittings

FISHER CONTROLS R63EGX00022 Valve Regulator Repair Kit NEW

2" 2 inch BSM flat faced SS sanitary butterfly valve M to F

2" 2 inch BSM SS sanitary butterfly valve

SMITH 1 inch 1" forged steel Class 800 threaded gate valve

BONNEY FORGE 1" 1 inch FLANGED GATE VALVE CLASS 300 991151-0028

Lone Star BX155 SI/LCS Soft Iron Ring Joint Gasket HT No EZ-069-1100 NIB QTY 5

BELIMO TR24-SR Valve Actuator with R223AC DN25 Control Valve Kvs 10 NEW

2” 2 inchBSM sampling port adaptor with ?” diaphragm valve and triclover union

PH 1 inch 1" forged steel check valve Class 800 threaded NEW

KLEP Rubber replacement diaphragm SO/200 8" inch for Diaphragm Valve NEW

TOYO 1.5" Brass Globe valve 1 1/2 IN - Class 200

KLEP Teflon Diaphragm Valve 1" inch DN 25 NEW

HYUNDAI Gate Valve - 1 inch Class 800: A105N Ends NPT

Spirax Sarco FT 14 Steam trap station 3/4 inch strainer valve 9 available

Spirax Sarco steam trap FT 10-10 3/4 inch Strainer valve 17 available

PH 1 inch 1" forged steel Class 800 threaded gate valve NEW

DURA Lugged Butterfly Valve BVCL-2161 150mm Table E CF8M Disc EPDM Seat NEW

2 inch Triclover Butterfly Valve, Stainless, manually operated

OMB 0.5 inch 1/2" DN 15 forged steel gate valve Class 800 105N NPT thread NEW

OMB 1 inch 1" forged steel Class 800 A105/HFSeat NPT threaded gate valve NEW

Spirax Sarco 0671780 Valve and Seat Assembly 1" for 213/223/623 - IB32 NEW

HANCOCK TYCO AP 1602 1 INCH CLASS 800 GATE VALVE A105 8# NPTxS Probably new.

KLEP Rubber lined Diaphragm Valve 26/VKKRL050D 2" inch DN 50 50mm NEW

TURNFLO T4CS32 070207-8 5 inch lugged wafer butterfly valve CF8M NEW

RICHARDS 1/2" DN15 high press. 015 R545 OZMVGF6EO9 1500 PSI ball valve Duplex

2" 2 inch BSM SS sanitary butterfly valve coupled with 2" BSM check valve

KITZ ELK000014-06, 07, 08, 09, 10, 11, 00-05-29 30 Valve replacement parts NEW

WEKA 26110/1000 Magnetic liquid level indicator: 1000mm module NEW

NEWAY 1.5 in Class 800 CHECK VALVE A105N CR 13

Spirax Sarco 0628085 208/1 Float Sub Assembly NEW

HD 0.75 inch Class 800 Gate Valve NPT - A 105 N G38

SMITH CRANE 3/4 inch globe valve 842 XU - Cl 800 with welded extension piping

FORCE Valve Co. Flanged ball valve 2 inch Class150 M4L04 CF3 / 304L / PTFE

KITZ 1" Flanged check valve 1-300 SOS1U C732 CF8M / 316 SS / MTFE

KLEP Teflon Diaphragm Valve 2" inch DN 50 NEW

Bonney Forge 1 inch Class 800 SW gate valve: A 105 N / CR 13 - NEW

FLUIDLINE 3/4 inch globe valve CS 13 CR - Class 800 Threaded

FORCE Valve Co. Flanged ball valve 1.5 inch Class150 M4L04 CF3 / 304L / PTFE

SHORITSU Flanged needle valve 3/ inch - Rating 300

Smith Crane 0.5 inch 1/2" DN 15 forged steel A105NLC flanged check valve NEW

KLEP Rubber lined Diaphragm Valve 26/VKKRL/080D SO80 3" inch DN 80 NEW

FARRIS (FISHER) 27DA23-M20 PRESSURE RELIEF VALVE

FARRIS (FISHER) 27CA23-M20 PRESSURE RELIEF VALVE

John Valves 1.5" JOHN SUPER flanged globe valve

Hancock Tyco AP 1602 Gate Valve 1 inch Class 800: Ends SW : body A105N

KEYSTONE TYCO VLV CHK F264J 277 100B 4 inch CHECK VALVE Food Grade Stainless NEW

EMICO WCB Ball valve 2 IN - Class 800

PROCESS SYSTEMS Series 77 DN20 3/4 in. SS Ball valve & SR 85 PNUTEC Actuator NEW

Saunders Alfa Laval glass-lined diaphragm valve 1/2 inch -body NEW

Spirax Sarco Spira-tec type 30 steam trap condition monitor

Spirax Sarco BYVAP HP 80 Class 1500 Bimetallic steam trap SW - NEW

HYUNDAI Gate Valve - 1.25 inch Class 800: A105N Ends: NPT

Spirax Sarco Half inch 0.5 in SBP 30 HC Steam Trap S/W NEW

TLV A65S Thermodyne Steam Trap 15mm A105 S.W.NIB

ARMSTRONG 1011 1/2 inch SS Steam Trap NEW

ARMSTRONG 1810 1/2 inch SS Steam Trap NEW

AIA Flanged ball valve 2 inch 2-150 SCS 14 CF8M

Superseal 2inch Flanged Ball Valve L26L 2" Class 300 CF 8 PTFE