HIMax Safety Manual - Tuv-fs.com

HIMax5 System Bus Module5 System Bus ModuleA system bus module administrates one of the two safety-related system busses. The twosystem busses are redundant to one another. Each system bus interconnects the variousmodules and base plates. The system busses transfer data using a safety-related protocol.A HIMax system containing only one processor module can be operated at a reducedavailability level using only one system bus.5.1 Slots Permitted for System Bus ModulesOnly slots 1 and 2 of each base plate are permitted for the system bus modules. No othermodules may (nor can) be plugged in to these slots.If just one system bus is being used, the system bus modules must be inserted into slotnumber 1 of each base plate. In such a case, a blank module must be inserted in Slot 2.NOTICESystem malfunction possible!Slot configurations, other than those specified here, are not permitted for systembus modules!5.2 Rack IDThe rack ID identifies a base plate within a resource and must be unique for each baseplate.The rack ID is the safety parameter for addressing the individual base plates and themodules mounted on them!The rack ID is stored in the Connector Board of the system bus module and must bemodified using the system bus module. Whenever the rack ID must be changed, e.g., wheninstalling a new HIMax system, follow the instructions given in the system manual.5.3 ResponsibilityOnly one of the system bus module contained in each system bus may receive the"responsible" attribute and thus be configured as "responsible" for the system busoperation.• For System Bus A, the "responsible" attribute is reserved for the system bus module inBase Plate 0, Slot 1.• For system bus B, the user can use SILworX to set the attribute.The responsible system module must be either located in Base Plate 0 or Base Plate 1.Make sure that this requirements are met prior to starting safety-related operation.HI 801 003 D Rev.2.0 Page 25 of 70