ABPLC1769-L35E现货多多，***，***无忧！！!计算机与PLC之间的通信是建立在以RS232标准为基础的异步双向通信上的，FX系列PLC有其特定的通信格式，整个通信系统采用上位机主动的通信方式，PLC内部不需要编写专门的通信程序，只要把数据存放在相应的数据寄存器中即可，每个数据寄存器都有相应的物理通信地址，通信时计算机直接对物理通信地址进行操作。通信过程中，传输字符和命令字以ASCⅡ码为准，常用的字符及其ASCⅡ码对应关系。计算机与PLC进行通讯时，计算机与PLC之间是以帧为单位进行信息交换的，其中控制字符ENQ、ACK、NAK，可以构成单字符帧发送和接受，其余的信息帧发送和接受时都是由字符STX、命令字、数据、字符ETX以及和校验5部分组成。主营AB、本特利Bentley、GE通用电气、ABB、schneider、伍德沃德、韦伯、Siemens、Yokogawa、Bailey等多种进口品牌中的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。SIEMENS6SE6440-2UD17-5?AA16SE64402UD175AA?1DRIVEALLENBRADLEYPANELVIEW2711-K10C82711K10C8SCREENALLENBRADLEY1771-TCMSERIESD1771TCMALLENBRADLEY509-BOD509BODSERIES1ALLENBRADLEY1769-OB161769OB16PHOENIXCONTACTFLSWITCH5TXETHERNETSWITCHALLENBRADLEY1398-DDM-0051398DDM005NEWNOBOXALLENBRADLEY1794-IF4I1794IF4INEWNIBALLENBRADLEY1756-IB161756IB16ALLENBRADLEY1746-NI16V1746NI16VALLENBRADLEYABPLCKEYSLC500CONTROLLOGIX5KEYSALLENBRADLEY1762-L40BWA1762L40BWASERIESAALLENBRADLEY1762-L40BWA1762L40BWASERIESCDANAHEREAGLESIGNALCONTROLSBR15A6120VAC0-60SECDANAHEREAGLESIGNALCONTROLSBR18A6120VAC0-10MINDANAHEREAGLESIGNALCONTROLSBR15A6120VAC0-60SECALLENBRADLEY700-HT22BA1700HT22BA1TIMEDELAYRELAYALLENBRADLEY1762-L40BWA1762L40BWASERIESCALLENBRADLEY1747-L5421747L542SERIESCALLENBRADLEY800FM-MT44MX12800FMMT44MX12NEWNIPALLENBRADLEYPROSOFTMVI-46MVI46MCMCOMMUNICATI***ALLENBRADLEYPANELVIEW2711-K10G82711K10G8ALLENBRADLEY2711P-B15***D22711PB15***D2ALLENBRADLEYGUARDMASTER440L-M8200440L8200GE30A3PTHED136030PHOENIXCONTACT2814016MCR-1CLP-I/I-0/0ALLENBRADLEY20-COMM-P20COMMPPROFIBUSALLENBRADLEYPROSOFTMVI56-GSCMVI56GSCALLENBRADLEY1756-OB321756OB32ALLENBRADLEYPROSOFTMVI-56-MCMMVI56MCMALLENBRADLEY1756-IB321756IB32ALLENBRADLEY1762-OB81762OB8ALLENBRADLEY1762-IF2OF21762IF2OF2ALLENBRADLEY1762-IF41762IF4ALLENBRADLEY1756-IB161756IB16ACUAMPAUTOMATIONDIRECTACT200-42L-FACT20042LFALLENBRADLEY1606-XL480E1606XL480E24V20AALLENBRADLEY1606-XL960E-3S1606XL960E3S24V40A)