在检查输入点时，一般输入信号无非是各种传感器，如电容、电感、光电、压阻、超声波、磁感式和行程开关等传感器。检查这些元件比较简单，根据元件说明将工件放在工位上，或是移动执行机构检查传感器是否有信号即可。当然，不同的设备检测的方式可能不同，这要看具体情况而定了。 但是在检查输出信号时就要格外小心了。如果是电驱动产品，必须在安全情况下，尤其是保证设备不会发生撞击前提下，让执行机构的驱动器得电，检查执行机构是否能够运动。如果是液压或气动执行机构，同样在安全情况下手动使换向阀得电，从而控制执行机构。在检查输出信号时，不论执行机构的驱动方式是什么，一定要根据元件说明书，首先要保证设备和人身安全，要注意并不是所有设备的执行机构都可以通电测试的，所以有时个别的输出信号可能无法手动测试。 无论是输入还是输出装置，当传感器有信号或执行机构的驱动装置得电后，必须同时检查PLC上的I/O模块指示灯是否也点亮。很多设备中，输入输出信号是通过接线端子与PLC连接，有时接线端子的指示灯有信号 ，但不能保证由于连接导线内部断路，而PLC上相应的地址没有信号接通。这一点要特别注意。 深圳众事德控制系统有限公司是一家专业从事分销进口欧美**品牌工业传感器、接近开关、编码器、安全防爆产品、物位开关、雷达料位计、电磁流量计、压力变送器、称重传感器等仪表类产品的进出口贸易型企业。 我司主要涉及数控机械、冶金、石油天然气、石油化工、化工、造纸印刷、纺织印染、机械、电子制造、汽车制造、包装、印刷、机械、**、塑胶机械、电力、水利、水处理/环保、**工程、锅炉、运输、金属成型、钢铁、电力、汽车、供暖、能源、输配电等行业众多行业的客户备件供应。 电话：0755-23210692 传真：0755-23210691 电话：18018711575 联系人： 文工 QQ：3004686239 mail：3004686239@ Allen?Bradley?1746-ITV16?SLC500?Sourcing?Input?Module?-?Used?-?S Siemens?PLC?Memory?2GB?Compact?Flash?6ES7648-28F02-0FX0 SIEMENS?6ES5?430-7LA12?SIMATIC?S5?INPUT?MODULE?(18E3) Allen?Bradley?1746-A7?SLC?500?7?Slot?Modular?Chassis?-?Used?-?S Omron?3G2A5-PS222?E,?I/O?Power?Unit Allen-Bradley?PanelView550?2711-K5A1?Series?F Siemens?3TK2805-0BB4 ALLEN-BRADLEY?1734-OW4?*NIB*??SER?C?REV?A01?F/W?R?3.014?(3F1) Allen?Bradley?1747-AIC?Isolated?Link?Coupler?-?New?Surplus?Sealed Allen?Bradley?1734-OB8S?POINT?I/O?-?New?Surplus?Sealed?-?Series? Allen?Bradley?1769-IQ32?32?Point?24VDC?Sink?/?Source?Input Allen-Bradley?1747-KE?Interface?Module?SLC?500 Bailey?Pyromat?320-P?Temperature?Control?D32P4812-1-11B120?Good?Used AEG?MODICON?PC-0984-130?AS-C951-009?1002?CPU?PLC?CONTROLLER?(1D4) ALLEN?BRADLEY?1336-L6/B?INTERFACE?BOARD Allen?Bradley?1746-IV16?SLC500?Input?Module?-?Used?-?Series?C Allen?Bradley?ControlLogix?1756-OB16E?DC?Output?Module?*NEW* Beckhoff?Ethercat?8?Channel?Digital?Input?Terminal?EL1008?NEW Allen?Bradley?1771-RTP4?Termination?Panel?Series-A?Rev-A01?PLC5?New 1761-L16AWA Siemens?6ED1?052-1HA00-0BA0?LOGO!?PLC,?DC?In?/?Relay?Out Allen-Bradley?1745-E105?SLC100?Relay?Output?Expansion?Unit?!?WOW?! TEL-TRU?4-20?MILLIAMP??MODEL?#?530?,?NEW?DEMO?MODEL OMRON?C20?3G2C7-MC22B?PLC?I/O?MODULE ALLEN-BRADLEY?1794-OW8?*NEW?SEALED*?SER.A?FLEX?8?POINT?DIGITAL?OUT SIEMENS?S7-300?OUTPUT?MODULE?32?Point?MODULE?-?6ES7?322-1BL00-0AA0 GE?FANUC?IC695PSA040F?Rx3i?40W?Power?Supply?120/240?VAC,?125VDC?-Siemens?Siematic?S5?6ES5951-7LD21?Power?supply?6ES5?951-7LD21 SIEMENS?6ES7?972-0CA23-0XA0?SIMATIC?S7?PC?ADAPTER?V?5.1?(2B4) Allen?Bradley?1746-OB16?SLC500?Output?Module?(Sourcing)?-?Used?- MITSUBISHI?A1SX42?INPUT?UNIT TENONING?JIG-NEW?IN?BOX?Xcalibur GE?GENERAL?ELECTRIC?0517L0325AB?PC?BOARD OMRON?C200HS?|?INTERRUPT?INPUT?UNIT,12-24VDC,8?POINTS Thor?Power?Supply?1700-9999-00145?Rev?B ALLEN?BRADLEY?1771-IJ?ENCODER?COUNTER?MODULE,?5V?I/O,?SER?A(14C3) SIEMENS?6ES5?095-8MA03?CPU?Module?Compact?Unit?WOW Omron?GT1-ID16-1?16?output?PLC?node Allen-Bradley?1769-PA2?Compact?I/O?Power?Supply?-?New?Surplus?Seal ALLEN?BRADLEY?42SMU-7250?42SMU7250?photoswitch?sensor?*NEW?NO?BOX* Allen?Bradley?1769-ADN?Compact?I/O?DeviceNet?Adapter?-?Used?-?Ser Allen?Bradley?1794-ID2?FLEX?I/O?Input?Module?-?Used?-?Series?B Allen-Bradley?1747-NT4?Thermocouple/nv?Input?Module?SLC?500 Allen?Bradley?1775-MR8?CMOS?RM?MEMORY?32K?WORDS,?Used Module?EX240-IE1?NEW Allen-Bradley?1794-IB16?I/O?Module,?16?Digital,?Sink?Inputs,?24VDC Siemens?FC?Massflo?MASS2100,?Flow?meter Allen?Bradley?1769-OB16P?CompactLogix?-?Used?-?Series?B ALLEN?BRADLEY?1794-IB16?1794IB16?input?module?*USED?&?TESTED* Allen?Bradley?1747-PIC?SLC?500?RS-232?to?DH-485?-?Used?-?Series Hubbell?HBL2723?Connector?Body?Female?3Pole?4Wire?30A?250V?!?NEW DYNAPAR?HR6251000061C?encoder?*USED?&?TESTED* GE?Fanuc?IC693CPU331-BB?CPU?Module?USED CAREL?PCO3010AM0?PGD0000F00?KEYPAD.?ARMSTRONG?(2D1) Allen?Bradley?1794-CE1?Allen?Bradley?FlexLogix?Cable?1794CE1?E01 MITSUBISHI?A1SX42?INPUT?UNIT Allen?Bradley?1745-M1?Memory?Module ALLEN?BRADLEY?--?PC?INTERFACE?CONVERTER?--?1747-PIC?-?SERIES?A?- FISHER?SERIES?3660?TYPE?3660?3?to?15?PSI?ACTUATOR?PNUEMATIC Allen?Bradley?1794-IM8?Flex?I/O?-?New?Surplus?Open?-?Series?A ALLEN-BRADLEY?1492-ACABLE025G??PREWIRED?FOR?1771-OFE?SER?A?(3E5) Allen?Bradley?1764-LSP?Series? 1500?MicroLogix?1500 Mitsubishi?A1S61PN?Power?Supply?Module?5A?5VDC?Out?100-240VAC?In? Siemens?Siematic?S5?6ES5951-7LD21?Power?supply?6ES5?951-7LD21 Allen-Bradley?Point?I/O?InputModule?1734-IB8?Series?D LISTING?OMRON?XW2Z-100J-F1?Terminal?Cable?Assembly?XW2Z100JF1?1 Allen-Bradley?CompactLogix?8Pt?Relay?Output?Card?1769-OW8?Ser?B Allen?Bradley?1769-IA16?Digital?Input?-?New?Surplus?Sealed?-?Seri Allen?Bradley?1756-IA16?ControlLogix?79-132V?AC?Input?Module?-?Use Allen?Bradley?1756-CNB?ControlLogix?ControlNet?Bridge?Module?-?Used Measurex?Transceiver,?SSC?F/O?Auto?B/C?05359100?Rev?C Allen?Bradley?1771-AL?PLC-2?Local?I/O?Adapter?Module?-?Used?-?Se Allen?Bradley?1746-OW8?SLC500?Relay??-?Used?-?Series?A Endress?Hauser?FTL51-AGR2BB2G5B,?Liquiphant?Length?M?9.4in?Unused SIEMENS?ETHERNET??PROCESSOR?CP343-1?--?6GK7-343-1EX11-0XE0 GE?FANUC?SERIES?90?30?IC694DNM200?AB Allen?Bradley?SLC?500?Direct?Communication?Module?1747-DCM?1747?DC Allen?Bradley?1746-OB16E?SLC500?Protected?Output?Module?-?Used?- Allen?Bradley?1762-IQ8?MicroLogix?-?New?Surplus?Sealed?-?Series?A Fanuc?IC693ALG221C?Analog?Input?Module?!?NEW?IN?BOX?! Allen?Bradley?2711-CBL-PM10-C?RS-232?Cable?for?PanelView?*New?Surpl Allen?Bradley?1734-IE2C?2?Channel?Analog?Input?module?w/1734-MB Vipa?214-1BC02?CPU?24V ALLEN?BRADLEY?1762-OW16?1762OW16?micrologix?relay?output?*NEW?SEALE ALLEN?BRADLEY?1762-OW16?1762OW16? output?*NEW?SEALED* Mitsubishi?MELSEC?Programmable?Logic?Controller?PLC?FX-16MR-ES Siemens?Simatic?S7?6ES7?365-OBA01-0AA0??S-ZVU3L-A025482?New ALLEN-BRADLEY?2090-UXLF-123?AC?1??LINE?FILTER?*NEW*?SER?A
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