描述
PLC的cpu內(nèi)有指示程序步存儲地址的程序計數(shù)器,在程序運行過程中,執(zhí)行一步該計數(shù)器自動加1,程序從起始步(步序號為零)起依次執(zhí)行到最終步(通常為end指令),然后再返回起始步循環(huán)運算。plc每完成一次循環(huán)操作所需的時間稱為一個掃描周期。不同型號的plc,循環(huán)掃描周期在1微秒到幾十微秒之間。程序計數(shù)器這樣的循環(huán)操作,這是dcs所沒有的。這也是使plc的冗余不如dcs的原因。
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主營:世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
Foxboro Pressure Transmitter IDP10-D78A71C-L?1C1K1
Siemens Reversing Starter 3TD4802-2AK6
Stahl Cable Guide 4333001430
Foxboro Flowtube 9303A 3″
Milltronics Level Transmitter Miniranger Plus
Square D Circuit Breaker LAL36300
ABB Assembly Cable 3HAB 6133-1/3HAB6133-1
United Electric Temperature Switch E100-2BSB-S061-?UC22
Hach Turbidimeter Aquatrend module 51350-60/51350-00
TRICONEX TRICON EXPANSION CHASSIS
SIEMENS 6ES5-942-7UA13 CPU MODULE
Foxboro Temperature Transmitter RTT20-D1LMKCA-C?1K1L1M1
Telemecanique Power Contactor LC1F265-G7-22L
ABB Assembly Cable 3HAB 8737-1/3HAB8737-1
TN Technologies LCD Screen 885474
Autogard Protection Relay E-510
Endress+Hauser Liquiphant II Level Switch FTL 360
Foxboro Temperature Transmitter RTT20-D1LSQCA-C?1D5K1L1
Square D Fuse Disconnect CHU364RB
Rosemount Flowmeter 8711THA30FR1G1E?504
Fisher Control Valve 5010-117-HCT001 Fieldvue
Fisher&Porter ABB Flowmeter 10D1462AE15PD21?AD12
Foxboro Flowmeter 2806-SABA-TSA-G
Saunders 1.5″Diaphragm Valve Rubber Lined 3449-652-P4
Endress+Hauser Pressure Transmitter PMC45
Foxboro Temperature Transmitter RTT20-D1LPQCA-C?1D5K1L1
Siemens Braking Unit 6SE7026-4FA87-2?DAO
Foxboro Pressure Transmitter IDP10-D20C01C-M?1L1C1K1
ABB Assembly Cable 3HAB 6107-1/3HAB6107-1
Allen-Bradley Power Supply 1771-P2
Simplex Master Controller 8565-333
Foxboro Pressure Transmitter IDP10-D20B11C-C?1K1
NEW MODICON TSX QUANTUM AVI 140 030 00 AVI1400300
SIEMENS S5 6ES5-951-7LB13 POWER SUPPLY MODULE
Foxboro Magnetic Flowtube 800HA-WPR-PJGCN?Z
Foxboro Ball Valve Assembly BS805JQ
Square D Magnetic Contactor 8502SEO2V02S
Allen-Bradley Micro Controller 1761-L32AWA
National Controls Dust Collector Control DNC-T2032-A10
Foxboro Pressure Transmitter IDP10-D20A21C-M?1
GOULD MODICON PC-O984-480 PROCESSOR MODULE
Foxboro Ph Transmitter 8701TPH-FYCNZ
Foxboro Pressure Transmitter IGP10-D20A01C-M?1L1C1KT
Endress+Hauser Liquiphant M Level Switch FTL51C
ABB Flowmeter 10DS3111EDE11P1?A2DA11321
Foxboro Pressure Transmitter IDP10-DS3C01C
Foxboro Pressure Transmitter IDP10-DS4C01C
Foxboro Pressure Transmitter IDP10-DS1B01C
Colorgraphic Predator LT 4 Video Card 612304-H1
Allen-Bradley Data Highway Com Interface 1770-KF2
Us-Filter Controller REM-1D 2846006
SIEMENS 6ES5-434-7LA11 DIGITAL INPUT MODULE
Allen-Bradley Cooler Fan Kit 1336-FAN-SP3A
NEW SIEMENS 6ES5-431-7LA11 INPUT MODULE 24/48VAC/DC
Foxboro Pressure Transmitter IDP10-D22A21C-M?1K
ABB Resistance Detector SK663126-C/SK 663-126C
Foxboro Pressure Transmitter IDP10-D23D01C-M?2L1C1K
Foxboro Pressure Transmitter IDP10-D46B21C-M?1L1C1K1V
Endress+Hauser Liquiphant II Level Switch FTL 360
TRICONEX TRICON MAIN CHASSIS
Yokogawa PH402G PH converter
Foxboro Pressure Transmitter IGP20-D21B21C-M?1L1C1KT
Foxboro Pressure Transmitter IGP20-D22A01C-M?1L1C1KT
NEW THORBURN EXPANSION JOINT EPDM 10″DIA,8″LONG