Eaton SmartWire-DT Manual

Also see for SmartWire-DT: Application Manual Manual

Contents

Acyclical data communication6103/11 MN05013002Z-ENLater adding of SmartWire-DT slavesIf you are not sure of the final SmartWire-DT topology andmay wish to add SmartWire-DT slaves at a later time, addinga placeholder (dummy module) in the appropriate position inthe SmartWire-DT network is recommended. This is alsouseful in STEP 7 since the HW Config tool does not allow theadding of stations between occupied module locations.X Position the permanent SmartWire-DT slaves in the correctorder and add the placeholder (reserved place for expan-sion) at the required position.A wildcard reserves a SmartWire-DT slave address for Smart-Wire-DT network slave to be added later.X Save the project and then transfer it to the PLC. Switch thePLC to RUN mode.After the DP configuration is received from the PLC, theSmartWire-DT gateway addresses the slaves automaticallytaking the placeholder into account.Acyclical data communica-tionSmartWire-DT slaves such as the PKE-SWD-32 module forthe electronic motor-protective circuit-breaker also supplyacyclical data in addition to the cyclical data. The functionblocks SFB52 RDREC (read record) and SFB53 WRREC (writerecord) are used in STEP 7 for reading and writing acyclicaldata.The reference to the required slave is implemented withthese function blocks via the parameters ID and Index.The input address of the SmartWire-DT slave with whichcommunication is to be established is set at the parameterID. The Index parameter addresses the V1 object. The firstobject is assigned number 1, the second 2 etc. On the Smart-Wire-DT slave PKE-SWD-32, the object 1 supplies the currentvalue I rel.h Refer to the STEP 7 documentation for further informationon handling these function blocks.