描述

模擬量輸入轉(zhuǎn)換成數(shù)字量和把數(shù)字量轉(zhuǎn)換成模擬量輸出的公式是一樣的。下圖摘自“西門子S7-200·LOGO!·SITOP參考BetaVersion1.0”。舉個(gè)例子，用4–20ma電流輸出來(lái)控制變頻器的頻率0—50hz，首先200PLC的4–20ma對(duì)應(yīng)的數(shù)字量是6400—32000。對(duì)應(yīng)于公式Ov=pqw;

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主營(yíng)：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國(guó)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(guó)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(chǎng)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(hào)處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)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(cuò)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(lè)）：Indramat，I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

Allen Bradley Contactor 100-A09ND3 120/110 VAC (3569)

Allen Bradley 100-M09NZ*3 /A 100-M09 Contactor

Allen Bradley 100-C09D10 Contactor C09 Series A

Allen Bradley 100-FPTB30 Pneumatic Timer ~NIB~

Allen-Bradley CAT100-A09NZ*3 Contactor DIN 24VDC

100-A24ND3 Allen Bradley 110/120v 24a Contactor

Allen Bradley 100-FA22 Auxiliary Contact NEW

ALLEN BRADLEY 100-MO5NZ 3 100-MO5NZ*3 CONTACTOR

ALLEN BRADLEY 100-A09NZ3 100-AO9NZ*3 USED CONTACTOR

Allen Bradley Contactor 100-NX66HB473 120V (3496)

Allen Bradley Contactor 100-C09Z*10

Allen Bradley 100-C09D10 Contactor Series A

Allen Bradley 100-FSD250 SER A SURGE SUPPRESSOR DIODE

Allen Bradley 100-FA11 Auxiliary Contact Series B

Allen Bradley 100-SA01 Auxiliary Contacts

ALLEN BRADLEY 100-FA04 Contact Block Series A NEW

Allen-Bradley Starter 100-A45N*3 C & Relay 193-CPC 45

ALLEN BRADLEY 100-FA31 AUX BLOCK 100FA31 LNC

Allen Bradley 100-C16B10 Contactor

ALLEN BRADLEY 100-C16D*10 CONTACTOR

LOT OF 3 ALLEN BRADLEY 100-A09NZ* SERIES B CONTACTERS

Allen Bradley Contactor 100-A09ND3

ALLEN BRADLEY 100-SA01 AUX CONTACT SIDE MOUNT NEW

1785-M100 Allen Bradley PLC 5 memory 1785M100 N376

ALLEN BRADLEY 100-A38N*3 100A38N*3 USED

ALLEN BRADLEY 100L-A20ND4 100LA20ND4 NEW NIB

Allen Bradley 700-CF310Ser. A 100S-F Ser B Contactor

ALLEN BRADLEY 100-C09*10 690 V 25 A CONTACTOR

8264 NEW Allen-Bradley 100-C43J02 Reversing Contactor

Allen Bradley 100-A24NZ*3 100-A24NZ 3 Contactor

NEW IN BOX ALLEN BRADLEY # 100-A09ND3 AC CONTACTOR

ALLEN BRADLEY 100-A60N

Allen Bradley 100-FSV136 SER A SURGE SUPPRESSOR 56/136V

8495 NEW Allen-Bradley 100-SA20 Auxiliary Contact 10A

Allen Bradley 100-SA20 NIB

ALLEN BRADLEY 100-FA04 Contact Block Series B

Allen Bradley 100-C16ZJ10 & 193-EA4FB overload Starter

Allen Bradley 100-C09*10 100C0910 Contactor

Allen Bradley 100-FA40 Auxiliay Conctact 100FA40 NEW

ALLEN-BRADLEY MINI CONTACTORS 100-M09N*31 SER.A

Allen-Bradley 100-SA20 Auxiliary Contact 10A

ALLEN BRADLEY 100-C12Z*10 100C12Z*10 USED

Allen Bradley Contactor 100-C23Z*10 Series C

ALLEN BRADLEY 100-A09ND3 STARTER REVERSING W/ 193-BSB22

Allen Bradley Contactor 100-A12ND3 120V w O/relay (3498

Allen-Bradley 100-C09Z*10 Contactor DIN-Rail