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廈門市泰尼電器有限公司
主營產(chǎn)品： AB模塊PLC |
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廈門市泰尼電器有限公司
主營產(chǎn)品： AB模塊PLC |
| 參考價 | 面議 |
IC697ACC720-+-+-IC697ACC720
-+-+-
R端由0變?yōu)?時，T4被復(fù)位并停止計時。復(fù)位后Q4.5變?yōu)?，當前時間和計時預(yù)置值均清0。
定時器指令還有簡化形式。
|
延時通定時器指令簡化形式 ：張亮（工程師） 專線： |
例：用S7-300控制指示燈HL1，當控制按鈕SB1按下時，HL1以2s熄滅、1s亮交替閃爍。設(shè)計相應(yīng)的PLC程序。
解：①分配控制系統(tǒng)編程元件：按鈕SB1—I0.0；指示燈HL1—Q4.0；延時通定時器T1—計時預(yù)置值為1s；延時通定時器T2—計時預(yù)置值為2s。
②采用延時通定時器簡化指令，其梯形圖和語句指令程序見圖。
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