产品描述：1756-OV16E<1756-OV16E>[关键词]现场总线；以太网通信；DCS；电气控制系统；PLC；机电控制系统；监测控制系统输入输出接口电路实际上是PLC与被控对象间传递输入输出信号的接口部件。输入输出接口电路要有良好的电隔离和滤波作用。1.输入接口电路由于生产过程中使用的各种开关、按钮、传感器等输入器件直接接到PLC输入接口电路上，为防止由于触点抖动或干扰脉冲引起错误的输入信号，输入接口电路必须有很强的抗干扰能力。如图1-2所示，输入接口电路提高抗干扰能力的方法主要有：（1）利用光电耦合器提高抗干扰能力。光电耦合器工作原理是：发光二极管有驱动电流流过时，导通发光，光敏三极管接收到光线，由截止变为导通，将输入信号送入PLC内部。光电耦合器中的发光二极管是电流驱动元件，要有足够的能量才能驱动。而干扰信号虽然有的电压值很高，但能量较小，不能使发光二极管导通发光，所以不能进入PLC内，实现了电隔离。（2）利用滤波电路提高抗干扰能力。***常用的滤波电路是电阻电容滤波，如图1-2中的R1、C。图1-2中，S为输入开关，当S闭合时，LED点亮，显示输入开关S处于接通状态。光电耦合器导通，将高电平经滤波器送到PLC内部电路中。当CPU在循环的输入阶段锁入该信号时，将该输入点对应的映像寄存器状态置1；当S断开时，则对应的映像寄存器状态置0。根据常用输入电路电压类型及电路形式不同，可以分为干接点式、直流输入式和交流输入式。输入电路的电源可由外部提供，有的也可由PLC内部提供。为什么更多人选择武汉夏通自动化？？因为真的无中间商赚差价！！夏通自动化——货源丰富，大量现货，质量保证，买的放心，用的安心您有任何进口的PLC，DCS备品备件缺损和需求，请与我们团队联系，我们以超快速度帮您寻找可靠的高品质的产品，同时缩短供货时间，保证您的设备能及时的正常运转。+17786032516微号------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------***提供：PLC可编程控制系统，分散控制系统（DCS）安全仪表系统（SIS），ESD系统，振动监测系统，汽轮机控制压缩机组控制系统（CCS）等各类工控系统部件系统里的PLC模块，DCS模块，CPU模块，IO模块，DO模块，AI模块，DI模块，网络通信模块，以太网模块，运动控制模块，模拟量输入模块，模拟量输出模块，数字输入模块，数字输出模块，冗余模块，电源模块，继电器输出模块，继电器输入模块，处理器模块。-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------产品广泛应用于：电力、石油、矿井提升、港口、供热、燃气、供水、污水处理、冶金、造纸、纺织、化工、水利等现代化工业领域！------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------关键词：PLC可编程控制系统，分散控制系统（DCS）安全仪表系统（SIS），ESD系统，振动监测系统，汽轮机控制压缩机组控制系统（CCS）等各类工控系统部件C112.18C112.51J13C78D15,C112.51-61438C112.91C112.91-6143807AA60R1GJV3074365R107AA61R1GJV3074366R107AA62R1GJV3074307AA63GJV3074368R107AA65R1GJV3074307AA80GJR5230010R000107AB200GJV3072413R107AB60R1GJV3074360R107AB61R1GJV3074361R107AB67R1GJV3074364R107AE83GJR5231211P107AS82GJR5218300R000107BA60R1GJV3074397R107BE60R1GJV3074304R107BE62R1GJV3074306R107BR60R1GJV3074375R107BR61R1GJV3074376R107BT60R1GJV3074301R107BT61R1GJV3074302R107BT62R1GJV3074303R107BV60R1GJV3074370R107CS61GJR5240300R0202;07CS61E;07CS61C;07CS61D07DS8507DS85R1,GJR5219300R0001/907507EA200GJV3072418R107EA60R1GJV3074350R107EA61R1GJV3074351R107EA62R1GJV3074352R107EA64R1GJV3074355R107EA65R1GJV3074359R107EA80GJR5230207EB200GJV3072411R107EB61R1GJV3074341R107EB62R1GJV3074342R107EI60GJV3074357R107ET83A07FP00R1GJR2267600R107GS40R107KP60R101GJV3074360R10107KP62GJR5240400R10507KP64GJR5240600R010107KR228R2GJV3072440R207KR240R1GJV3072402R1,07KR240b07KT228GJV3072417R1,07KT228dR107KT240DR1GJV3072419R1,07KT240R107KT60R101GJV3074381R10107NG60R1GJV3074310R107NG61R1GJV3074311R107NG61R2GJR5240300R020207NG63R1GJV3074313R107NG63R2GJV3074313R207NG66R1GJV3074315R107NG66R2GJV3074315R207NG68R1GJV3074317R107NG80GJR5211700R4/B07NG81GJR5213300R0006,07NG81R607NG82R3GJR5215100R3,GJR5215100R000307NG82R4GJR5215100R4,GJR5215100R000407PA8507PS85,07TR8507PG200R1GJV3072408R107PG201GJV3072409R107PG8507PG85R1,GJR5219800R000107PR201R14303I84007PR62R1GJV3074336R107PR62R2GJV3074336R207PS60R1GJV3074330R107PS61R1GJV3074331R107PS62R1GJV3074332R107PS62R2GJV3074332R207PS62R3GJV3074332R307PS63R2GJV3074333R207PS63R3GJV3074333R307PS8507TR85,07PA85,GJR5219500R000107PT40b07SV60R107TA6007TI8007TR8507PS85,07PA8507WP84R302GJR5230300R30207XS01C-EGJR2280700R307XS80GJR5212000R507YS03GJR2263821P407YS03B-EGJR2263800R3,GJR2263800R107YS80GJR521210007YS81GJR52221800R2,GJR52221810R107YS86GJR5215400R207ZB60GJR5240200R000107ZB69R1GJV3074379R107ZB69R2GJV3074379R207ZE60R201GJV3074320R20107ZE60R302GJV3074320R30207ZE61R101GJV3074321R10107ZE61R201GJV3074321R20107ZE61R302GJV3074321R30207ZE62R101GJV3074322R10107ZE62R201GJV3074322R20107ZE62R302GJV3074322R30207ZE63R302GJV3074323R30207ZE8207ZE8507ZE85R1,GJR5219400R0001/907507ZE88GJR5231800R10107ZG60R1GJV3074356R107ZW80GJR5215300R207BE61R1GJV3074305R107NG4107PS4207PS4307PT4007TI40EGJR2271600R1107XS40E07YS40E07ZE40EGJR268800R2100004P1HETN100004P1200007P1HETN200007P135FB9035AB95GJR5145600R0001,GJR5145600R170AA02a-EHESG446433R170AB01b-EHESG446867R2,HESG446867R000270AS04b-EHESG332140R170AS06a-EHESG332112R170AS32a-EHESG332121R170AS40b-EHESG332140R170AS41b-E70AS45b-EHESG332140R170AS46b-EHESG332140R170AS47b-EHESG332140R170AS62a-EHESG332112R1,70AS06a-E70AS67a-EHESG332112R170BA01bHESG446421R270BK02a-EHESG332077R170BL02CHESG332157R270BL30aHESG446528R170BL31aHESG332123R370BT01bHESG446998R170BV01a-***HEIE421327R2,HEIE421327R000270BV01b-EHESG446421R170EA01a-EHESG446220R1,HESG446220R000170EA01b-EHESG447038R170EA02a-EHESG446409R170EA03a-EHESG446680R170EA04a-EHESG446542R170EA04b-EHESG447103R170EB01aGJR2311900R270EB01b-EHESG447005R270EB02b-EHESG446889R470EB03aHESG446729R170ER01aHESG446457R170FA01AHESG223063R170FA01bHESG223140R170FK01bHESG447016R170FK01aHESG446048R1)