SC300E-MPP ABB PROCESSOR MODULE

（5）改用方便：PLC用于某设备，若这个设备不再使用了，其所用的PLC还可给别的设备使用，只要改编一下程序，就可办到。如果原设备与新设备差别较大，它的一些模块还可重用。

2.3工作可靠

用PLC实现对系统的控制是非常可靠的。这是因为PLC在硬件与软件两个方面都采取了很多措施，确保它能可靠工作。事实上，如果PLC工作不可靠，就无法在工业环境下运用，也就不成其为PLC了。

(1) 在硬件方面：

PLC的输入输出电路与内部CPU是电隔离。其信息靠光耦器件或电磁器件传递。而且，CPU板还有抗电磁干扰的屏蔽措施。故可确保PLC程序的运行不受外界的电与磁干扰，能正常地工作。

扫除茅舍涤尘嚣，一炷清香拜九霄。

野客预知农事好，三冬瑞雪未全消。

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RTE DELTEC 05131575-611 REV K PCB CIRCUIT BOARD D520461


DYNALCO SS4000-18 SPEED TRANSMITTER D537156


BBC B 1527680 XZ 921A-E AR 310564 PCB CIRCUIT BOARD D545314


BBC B 1527840 XZ 921A-E AR 424023 PCB CIRCUIT BOARD D545312


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KURZ INSTRUMENTS 185-4 N4 MARSHALLING PANEL 24V-DC D532385


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ACCU-CODER 711-S AUTOWEIGH INCREMENTAL SHAFT ENCODER 5/28V-DC D541629


AMETEK 80-230303-90 ANALOG SYNC PCB CIRCUIT BOARD D545508


01151-0376-0002 1151-377-1 CALIBRATION PCB CIRCUIT BOARD D545525


SQUARE D 8030 CRM232 R SY/MAX REMOTE TRANSFER INTERFACE MODULE SER B D541473


ALLEN BRADLEY 800H-6HZ4R 30MM PUSHBUTTON STATION ENCLOSURE SER C D555936


KEMP A007-1586 00077785 REV B PCB CIRCUIT BOARD D541873


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TYCO 406330-1 AMP CAT5E PATCH PANEL 24 PORT REV H D552080


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3000041 PCB CIRCUIT BOARD MODULE D522873


C-868 PCB CIRCUIT BOARD MODULE D522874


NEWPORT IDP-4/E INFINITY D DIGITAL PROCESS PANEL METER 10-32VDC 2.5W D542154


8510021 MARK IV PCB CIRCUIT BOARD D542220


PC388001 REV B PCB CIRCUIT BOARD MODULE D542234


CORNING D01H-5U5U-17M FIBER OPTIC CABLE SENSOR 17M FCU/FCU SIMPLEX D523340


RTK P925X INTERFACE CARD 24V-DC PCB CIRCUIT BOARD D529373


BALLUFF BTL5-P2-M0254-Z-S32 BTL0J2J MICROPULSE TRANSDUCER D542276


BURR BROWN LDM70 LDM70-ST FULLY ISOLATED LIMITED DISTANCE MODEM D542328


FLAIR 1269858 REV A PCB CIRCUIT BOARD D529774


K-TRON 510094 MULTI POWER SUPPLY PCB CIRCUIT BOARD MODULE REV D D529726


LEEDS NORTHRUP 035669 PROCESSOR SIGNAL PCB CIRCUIT BOARD CARD D533456


ATLAS COPCO 4231506210  10M TOOL EXTENSION CABLE D533903


DWYER DA-531-3-5 MERCOID PRESSURE SWITCH 120/240V-AC D550890


TECNOPENTA M1-PP RAIN PRESENCE SENSOR D538062


YOKOGAWA 180123ECRL 0-50MV 0-200 DC AMPERES AMMETER D538382


KRONES EDS-305-M-SC ETHERDEVICE 5-PORT ETHERNET SWITCH 12-48V-DC REV 2.2 D547863


GE FANUC IC600BF800K SERIES SIX LOCAL RECEIVER I/O MODULE D556875


THERMO ENVIRONMENTAL 9783 OZONATOR ASSEMBLY D543183


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TELEDYNE 0601-4000-02 CONTROL PCB CIRCUIT BOARD D542960