EMERSONA6824EMERSONA6824EMERSONA6824【大量现货】【当天签合同】【付款当天】就【顺丰发货】★厦门仲鑫达自动化设备有限公司★★联系人:洪工★★QQ:2851195468★★传真:0592-5165561(注洪工收)★★邮箱:2851195468@***.com★PLC输入信号采集示意图图1中，输入设备选用的是按钮SB0的常闭触点，输入继电器X0的线圈状态取决于SB0的状态。该按钮未按下时，输入继电器X0线圈状态为"1"通电状态，程序中所有X0触点均动作，即常开触点接通，常闭触点断开；若按下该按钮，则输入继电器X0线圈状态为"0"断电状态，程序中所有X0触点均***常态。如果输入继电器连接的输入设备是按钮SB0的常开触点，则情况恰好相反：在该按钮未按下时，输入继电器X0线圈状态为"0"断电状态，程序中所有X0触点均不动作；若按下该按钮，输入继电器X0线圈状态为"1"通电状态，程序中所有X0触点均动作。2.停车按钮使用常闭型由于PLC在运行程序判别触点通断状态时，只取决于其内存中输入继电器线圈的状态，并不直接识别外部设备，因此编程时，外部设备的选用与程序中的触点类型密切相关。这是一个在对照电气控制原理图进行PLC编程时易出现的问题。***典型的例子是基本控制--"起保停控制"中的停车控制。GENERALELECTRICDS3800HPTN1G1FGENERALELECTRICDS3800HFPB1F1EGENERALELECTRICDS3800HSDD1F1GGENERALELECTRICDS3800HSQD1E1BGENERALELECTRIC531X309SPCAJG1GENERALELECTRIC7V0ES108CD02150HP500V260GENERALELECTRICIC3600LTDA1CPCBOARD68A989064G1GENERALELECTRICDS3800HSCC1D1DGENERALELECTRICDS200GGDAG1AHEGENERALELECTRICDS3800NFCD1S1KGENERALELECTRICDS3800NEPA1E1DGENERALELECTRIC9F62KED300GENERALELECTRIC193X528ACG01INTERFACECARD36B605137ACGENERALELECTRICDS200IPCSG1AGENERALELECTRICDS3800NMEA1J1GGENERALELECTRICIC3600KRSE2GENERALELECTRICDS3800NFCD1L1EGENERALELECTRIC4KDV3149Q4F14D4GENERALELECTRICDS3800NEPA1F1EGENERALELECTRICDS3800NDID1P1HGENERALELECTRICDS3800ND1D1Q1HGENERALELECTRICDS200IPCSG1ABBW/CM300DY-24HGENERALELECTRICSKHA36AT1200GENERALELECTRICDS3800HXCA1D1DGENERALELECTRICDS200PLIBG2ACAGENERALELECTRICDS3800NRTC1A1AGENERALELECTRICDS3800NOAB1C1Bw/DS3800DOAA1A1BGENERALELECTRICDS3800HRCA1C1BGENERALELECTRICDS3800NBID1E1DGENERALELECTRICDS3800HUMB1B1AGENERALELECTRICDS3800NEPA1D1CGENERALELECTRICDS3800NFCD1K1EGENERALELECTRICDS200GDPAG1AHEGENERALELECTRICDS3800NDID1P1GGENERALELECTRICDS3800NDID1J1DGENERALELECTRICDS3800NDID1F1CGENERALELECTRICDS3800DDCD1B1AGENERALELECTRICDS3800NSFC1G1EGENERALELECTRICDS200LPPAG1AAAGENERALELECTRICCR192A1001100GENERALELECTRICDS3800NRCA1H1FGENERALELECTRICDS3800NBIB1K1Fw/DS3800DBIB1C1CGENERALELECTRIC68A993548G1GENERALELECTRIC193X377AAG01PCBOARDCONVERTER36B605238AA-A-X?2GENERALELECTRICIC3600STDC1HPCTIMERBOARD68A944104GENERALELECTRICMOTORFIELDCONTROLBOARDI93X532ADG04GENERALELECTRICD3800HSPC1D1FGENERALELECTRICDS3800HMPK1E1DW/DS3800DMPK1C1B)