描述

A-B相型雙計數(shù)輸入高速計數(shù)器
C25l～C255為A–B相型雙計數(shù)輸入高速計數(shù)器，它們有兩個計數(shù)輸入端，某些計數(shù)器還有復位和起動輸入端。
圖2中的X12為ON時，C25l通過中斷，對X0輸入的A相信號和X1輸入的B相信號的動作計數(shù)。X11為ON時C251被復位，當計數(shù)值大于等于設定值時，Y2的線圈通電，若計數(shù)值小于設定值，Y2的線圈斷電。
A/B相輸入不僅提供計數(shù)信號，根據(jù)它們的相對相位關(guān)系，還提供了計數(shù)的方向。利用旋轉(zhuǎn)軸上安裝的A/B相型編碼器，在機械正轉(zhuǎn)時自動進行加計數(shù)，反轉(zhuǎn)時自動進行減計數(shù)。A相輸入為ON時，若B相輸入由OFF變?yōu)镺N，為加計數(shù)(見圖2b)；A相為ON時，若B相由ON變?yōu)镺FF，為減計數(shù)（見圖2c）。通過M8251可監(jiān)視C251的加/減計數(shù)狀態(tài)，加計數(shù)時M8251為OFF，減計數(shù)時M8251為ON。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應用于以下領域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計算機控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列

本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

Motorola MVME167A e-mail

Motorola MVME167B e-mail

Motorola MVME167C e-mail

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Motorola MVME167P-35SE e-mail

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