CAN- and PROFIBUS - Sorcus

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PROFIBUSModules and ConfigurationThe M-DPM-12 PROFIBUS master■ Intelligent PROFIBUS-DP master with12 MBaud■ Conforms to the international EN 50170standard■ CPU (C165) and ASPC2 PROFIBUS controller■ Baudrates from 9.6 kBaud to 12 MBaudRS-485 PROFIBUS interface, electricallyisolated, pluggable with a C-Link■ 16-kB dual-ported RAM interfaceThe M-DPS-12 PROFIBUS slave■ 2 independent PROFIBUS-DP slaveswith a Siemens SPC3 controller■ Dual-ported-RAM user interface■ Conforms to the international EN 50170standard■ Automatic baudrate detection up to 12MBaud■ One PROFIBUS interface per channel,RS-485, electrically isolated, pluggablewith a C-LinkIntelligence synergized with highperformanceThe intelligent PROFIBUS-DP master moduleM-DPM-12 for MODULAR-4/486 carrierboards supports baudrates of up to 12MBaud. It processes the PROFIBUS-DPprotocol in complete independence of thecarrier board, thus freeing the CPU on theMODULAR-4/486 board from all protocolrelatedtasks. The physical interface to thePROFIBUS (standard: RS-485, electricallyisolated) is established by means of a micromodule,also referred to as a C-Link. C-Linksare used on other communication modulesfor the MODULAR-4/486 board as well. Themodule incorporates a C165 micro-controller,an ASPC2 PROFIBUS controller, plusRAM, ROM and a FLASH memory for storingthe system configuration. The interfaceprovided for the user is a dual-ported RAM,over which all data and commands can beexchanged.4Multi-purpose allrounderThe M-DPS-12 module converts a MODU-LAR-4/486 into one or two multi-purposePROFIBUS-DP slave stations. The physicalinterface to the PROFIBUS is plugged on bymeans of one C-Link for each channel. Themodule automatically detects the baudrateon the PROFIBUS, which can be between9.6 kBaud and 12 MBaud. User and diagnosticdata are transferred to the carrierboard in the dual-ported RAM. The modulelibrary included in the scope of delivery supportsthe user in implementing a slave.With this module, appropriate programmingof the carrier board and the use of furthermodules define the function which a particularslave is to perform. The number of userand diagnostic data to be transmitted isspecified by the user. For example, a multifunctionslave with digital and analog inputsand outputs is one possible option. The realtimesoftware on the MODULAR-4/486board will then ensure that the user data aretransferred from the slave to the outputmodules, and that the data acquired aretransferred from the input modules to theslave.P-DPM-12 PC/104 boardThe “small” MODULAR-4/486 board
Further applications for thePROFIBUS modulesFor example, two independent PROFIBUSsystems can also be linked via an M-DPS-12module. In this case, the MODULAR-4/486board handles data interchange betweenthe two PROFIBUS lines.An additional CAN module makes theMODULAR-4/486 into a router betweentwo different networks.The MODULAR-4/486 board can be used toconnect PCs with master and slave modules,to form a computer link with a hightransmission rate (12 MBaud).The limits to the options available to you ineach case lie only in the number of existingPC slots and the module slots on theMODULAR-4/486 board respectively.SlavesConfiguring the PROFIBUS systemSoftwareThe PROFIBUS system is planned for maximizedoperator-friendliness, using a graphicaluser interface. With the COMET200Windows software from Siemens, creationand documentation of the system are child’splay. All you have to do is select the otherslaves (e.g. SORCUS M-DPS-12, SiemensET-200, etc.), “append” these to the master,and assign the station numbers. After that,you can parameterize and configure theslaves, and also set the parameters for thebus itself. The maximum settable baudrateis specified by the slowest slave.For system documentation, the configurationcreated with COMET200 can beprinted out or exported as a text file. Finally,COMET200 will generate a file fordownloading onto the M-DPM-12 mastermodule, where it is permanently stored inMasterAutomaticsystem documentationthe FLASH memory. You have thus completedconfiguration of your system. Assoon as the system is started, the masterwill cyclically address the slaves, and theuser data can be exchanged over the dualportedRAM of the master module on theMODULAR-4/486 board. This contains anupdated image of the process peripherals(user data).The module’s scope of delivery includes ahigh-level-language library suitable both forPC programs and for real-time programs onthe MODULAR-4/486 board. The library providesall functions required for operating thePROFIBUS system: in addition to read/writefunctions, these include various diagnosticfunctions as well.Slave list:Selectingand addinga subscriberby “dragand-drop”5
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CAN- and PROFIBUS - Sorcus

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