Abstract
Retracted paper: Since AB SLC500 PLC does not support the Profibus protocol, it can not communicate with Profibus network. In order to realize the fast and accurate communication between these two, this thesis studies the Profibus protocol and develops the Profibus application program in the Flex I/O module. Thus the communication between SLC500 PLC and Profibus network is realized. Compared with the applying of SLC500 to control the other equipments and network, the applying of the Flex I/O module promotes the controlling efficiency and responding rate and realizes the complete control of the controlling system. The result of this research shows that this plan can ensure the accuracy, reliability and efficiency of the data transported.
Highlights
T SLC 500 PLC made in A-B company is a compact programmable controller which has wide applications
SLC500 PLC is connected with Profibus protocol device together through Flex I / O module
When the master station SLC500 PLC controls the slave station driver module 611UE, a data link will be created between the two stations
Summary
T SLC 500 PLC made in A-B company is a compact programmable controller which has wide applications. SLC500 PLC is connected with Profibus protocol device together through Flex I / O module. If the master station SLC500 PLC gets the bus control right within a certain time and wants to communicate with the slave station driver module 611UE of network, the media access control protocol between the master station and the slave station should be discussed. The media access control method of pure master-slave way is different from LAN standard It conforms to non-equilibrium normal response model of HDLC in OSI reference model data link layer of ISO. When the master station SLC500 PLC controls the slave station driver module 611UE, a data link will be created between the two stations. (1)The establishment of data link For the main station of SLC500 PLC, U-frame is set normal response mode SNRM command.
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