計算機與PLC之間的通信是建立在以RS232標準為基礎的異步雙向通信上的，FX系列PLC有其特定的通信格式，整個通信系統采用上位機主動的通信方式，PLC內部不需要編寫專門的通信程序，只要把數據存放在相應的數據寄存器中即可，每個數據寄存器都有相應的物理通信地址，通信時計算機直接對物理通信地址進行操作。通信過程中，傳輸字符和命令字以ASCⅡ碼為準，常用的字符及其ASCⅡ碼對應關系。 
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OMRONSHL-Q2155-01 


LITHONIALIGHTINGQE12012/3G21 


LUMBERGAUTOMATIONRSMCK4CONNECTORSRSMCK4，28045


ALLENBRADLEY802T-W1B 


ELANEF103.2CONTACTS


HONEYWELLMODELMC-1MICRO 


ALLENBRADLEY800EM-F22LX20 


ALLENBRADLEY800MR-JX2B 


DANIELWOODHEAD80165300VOLT，3AMPSCORDSET970330A80165AC118


ALLENBRADLEY889N-F5AF-6FSER.B 


ALLENBRADLEY800T-A1PUSH 


NIBALLENBRADLEY800A-M2FSER.B 


NIBSCHNEIDERELECTRICTSXBLY01 


B-LINEB20093/4"STDPIPE/CONDUITCLAMPRIGID 


BRADHARRISONDANIELWOODHEAD704000A13F120CORDSET4-POLE12"22-4CORD


SQUARED9999DT-10 


ALLENBRADLEY800EM-PL1 


TPC84890ECORDSET8POLE 


HONEYWELLLSZ-1EPLUNGER 


ALLENBRADLEY800EP-G2GUARDED 


SMC8319-25015DAISET 


AMPHENOL97-3108A-18 


GENERALELECTRICCR104PXC91 


IDECALW-W6ZGREENPUSHBUTTONW/TW-DAIFLAMP5-30V


ALLENBRADLEY800ES-LM5 


TOL-O-MATICSW167309REEDSWITCHSWBC212TT，167309


HONEYWELLMICROSWITCHBA-2RB-P4PLUNGER 


NIBALLENBRADLEY1492-HJ812 


BRADHARRISONWOODHEADB03000A11M020MICRO


ALLENBRADLEY1492-W4 


GENERALELECTRICCR104P 


ROTANIUMDUAL-LOKAWG2，3/8STUDSTERMINALLUGS31555


BALLUFFC75ANL00VY050M 


ALLENBRADLEY800E-2LX11L 


NIBALLENBRADLEY800T-XASER.DCONTACTBLOCK1NO-1NC 


ALLENBRADLEY800T-XD5 


NIBALCOM2413SELECTORSWITCHSERIES2000


SPCTECHNOLOGY1497COMMUNICATIONCIRCUITACCESSORY93S9，E131524


ALLENBRADLEY800T-PT16 


NIBALLENBRADLEY802T-W3 


ALLENBRADLEY800MS-WBLR00RED 


ENTRELEC116.797.13TERMINALBLOCKBARRIERSSCFCV4


NIBSYLVANIAECGECG74H72 


ALLENBRADLEY800T-X508 


ALLENBRADLEY800T-J2 


NIBHARTINGHAN32EE-M-C PINCONNECTOR09320323001，16AMP500V


BRADHARRISONWOODHEAD702002D02F060 


ALLENBRADLEY800T-FXR10D4 




























ALLEN-BADLEY1494V-FSR666 


ALLENBRADLEY800T-PB16 


BRADHARRISON103001C01F120 


PASS&SEYMOURPS20AC2-I 


CANFIELDP5107-1661000CONNECTOR120-240VAC280000136W/CAROL95258 


TELEMECANIQUEXZCPV1041L5PVCPREWIREDFEMALECONNECTOR，907354


NIBCUTLERHAMMERE50KL142SER.A1 


NIBALLENBRADLEY1492-HJ812 


NIBCOOPERCHDN-SA-NMINI 


SICK6009866CABLE 


WEIDMULLERWPE35TERMINALBLOCK35MMSCREWCONNECTIONGRN/YEL


BALLUFFC04EEC04UMIC4PMOLDED 


GENERALELECTRICCR104P 


SIEMENS3RX1536FEMALE 


TURCKRKC4.4T-2CABLE4PINFEM-FL2M，IDNUMBERU5302


BALLUFFC04EEL04TY020MCABLEMIC4PM/MFE2MST/ST22TPE


ALLENBRADLEY800E-4X01&800E-4X10SER.BW/GREEN 


TELEMECANIQUEZB6-AA2SELECTOR 


NIBHIRSCHMANN933395-100SOCKETELKE412FMH


NIBBRADHARRISONWOODHEAD1200661232MICROCHANGEEXTENSION884030C02M005


ENTRELECFED5.2LENDSECTIONGREY2.5MM


SQUAREDCLASS9007B8LEVERARM2-1/2"9007B8 


BRADHARRISON4090-1 


NIBCOMEPISP2K61W02LIMITSWITCH


CUTLER-HAMMERE30KLA2A2 


CUTLERHAMMERE50RALIMIT 


NIBSQUARED9007-CT54 


BACO23E11CONTACTBLOCKW/REDPUSHBUTTON660VAC-10A


TURCKVIG2-F653-5MCORDSETID:U1241-1024-48VDC


CUTLERHAMMER10250T/91000TCONTACTBLOCKSERIESD2T2306IEC60947-5-1


ABBCBK-KPGPUSHBUTTON1SFA616001-AAB 


COMPAQ159074-001CABLE6FT，REV.C，73-0854


POMONAELECTRONICS2249-C-48COAXIALCABLEASSEMBLY50OHM-RGC58C


ALLENBRADLEY800H-DRPUSHBUTTON 


FUJIELECTRICPEW-1AT/UPROXIMITYSWITCH3M 


DWYER1823-10PRESSURE 


NIBHONEYWELLMPB20PHOTOELECTRICRECEPTACLEBASE9745


2001258-1CPUINTERFACETODIGITAL0(1JK2)CABLE46，ALLQUADJ-12


ALLENBRADLEY800EP-G5 


TURCKKB-3T-2CORDSETMICROFAST3WIRE2MSTRAIGHTFEMALEID-NR:U2441


SQUARED9007-CT54 


FUJIELECTRICSZ-MRWCPOWERCONNECTION 


ELASTIMOLD02500270BG 




MORSETTITALIA43400-RDEURO4TERMINAL 


WOODHEADBRADHARRISONSAFETYYELLOWAWMSTYLE2661VM-118WG/4105CE18424


HONEYWELLBZ-2RD-A2BASIC 


COOPERCROUSEHINDSC47CONDUITBODYFORMC，1-