1756-OF6VI/AB智能制造
軟PLC的另外一個(gè)發(fā)展分支是,直接在微軟的個(gè)人計(jì)算機(jī)操作系統(tǒng)上運(yùn)行類似PLC的軟件,而用計(jì)算機(jī)取代PLC系統(tǒng)中的主站。運(yùn)行軟件PLC的計(jì)算機(jī)可以充分應(yīng)用計(jì)算機(jī)的開放性接口和通訊速度,兼容性好。可以掛接板卡、USB設(shè)備、以太網(wǎng)設(shè)備、串行通訊設(shè)備。比較典型的應(yīng)用方案是:組態(tài)王軟邏輯通過串行通訊(現(xiàn)在也可用以太網(wǎng))掛接研華的亞當(dāng)模塊。隨著電子技術(shù)、通訊技術(shù)和軟件技術(shù)的不斷發(fā)展。這種構(gòu)架將*取代PLC 和 DCS 成為主流形式。但目前PC機(jī)技術(shù)、操作系統(tǒng)和以太網(wǎng)還不能滿足可靠性要求。
PLC的控制技術(shù)
PLC實(shí)現(xiàn)控制的過程一般是:
1756-OF6VI/AB智能制造
1756-OB16E VDC ELEC FUSED OUTPUT 16PTS
1756-OB16I VDC ISOLATED OUTPUT 16PTS
1756-OB32 VDC OUTPUT 32PTS
1756-OB8 VDC 2 AMP OUTPUT 8PTS
1756-OB8EI VDC ISOLATED ELEC FUSED OUTPUT 8PTS
1756-OC8 VDC 2 AMP OUTPUT 8PTS
1756-OF4 ANALOG OUTPUT
1756-OF6CI ISOLATED ANALOG INPUT-CURRENT/VOLTAGE 6PTS
1756-OF6VI ISOLATED ANALOG INPUT-CURRENT/VOLTAGE 6PTS
1756-OF8 ISOLATED ANALOG INPUT-CURRENT/VOLTAGE 8PTS
1756-OH8I VDC ISOLATED 2 AMP OUTPUT 8PTS
1756-ON8 VAC 2 AMP OUTPUT 8 PTS
1756-OV16E VDC ELEC FUSED SINKING OUTPUT 16PT
1756-OW16I N.O. ISOLATED RELAY OUTPUT 16PTS
1756-OX8I N.O./N.C. ISOLATED RELAY OUTPUT 6PTS
1756-PA72 VAC POWER SUPPLY
1756-PA75 VAC POWER SUPPLY
1756-PB72 VDC POWER SUPPLY
1756-PB75 VDC POWER SUPPLY
1756-PLS PROGRAMMABLE LIMIT SWITCH MODULE
1756-TBCH 36 PIN SCREW CLAMP BLOCK W/STANDING HOUSING
1756-TBE EXTENDED DEPTH TERMINAL BLOCK HOUSING
1756-TBNH 20 POSITION NEMA SCREW CLAMP BLOCK
1756-TBS6H SPRING CLAMP BLOCK
1756-TBSH SPRING CLAMP BLOCK
1756-TCO2 INTERFACE TRANSCEIVER CABLE
1756-TC15 INTERFACE TRANSCEIVER CABLE