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Setup Communication reference KR A communication relationship is addressed by a local short designation, the communication reference KR. Several communication relationships can be created by the master. Local and external Service Access Point LSAP For communication, several service access points are available on both sides. In the KBL, the points where the messages pass must be explicitly stated. VEGACOM 557 PROFIBUS has more than 6 Service Access Points LSAP = 0 … 5. Master and Slave addresses To enable the individual Profibus participant to be accessed, each one has its own different address. The address must be entered in the KBL. 4.3 Parameter setting of the S5 communication processor CP5431 The communication processor CP5431 operates as PROFIBUS master. The NCM software (Network and Communication Management) is necessary for configuration of the bus parameters, Slave address, the assignment of the PROFIBUS objects in the PLC data sectors, etc. The basic information is available in the Siemens manuals: Instrument manual CP5431 FMS with COM5431 FMS volume 1, chapter 6 and volume 2: chapter 4 and 5 as well as the instrument manual for AG. The NCM software can be selected and started in the menu item "Change / additional…" in the STEP5/ST basic package (NCM is an additional module and must be installed separately from the basic package). The following main menus are then available: = Init Edit mains Load Test Tools +————————+ | Edit | | Path definition | | End | +————————+ VEGACOM 557 Profibus FMS SINEC CP 5431 FMS 21