13 Using SWD modules with the EtherCAT field busSmartWire-DT modules IP20 09/17 MN05006001Z EN www.eaton.com 249Figure 99: Changing the value of the option byte for module EU5E-SWD-2A2ADevice parameterDevice parameters are module-specific and make it possible to individuallymodify module properties. For example, they can be used to select the typeof sensor (Pt100, Pt100, Ni1000) and the temperature range in temperaturemodules. These parameters, together with their corresponding values, aredescribed in the documentation for the individual modules. The values needto be entered the same way as previously with the option byte.What needs to be considered here is that a length byte, which defines thetotal length of the parameter data including the length bytes, always pre-cedes the parameter bytes. The presentation of the parameter data dependson the programming system used, and also, in part, on the structure of theparameter data.Programming system TwinCATIf the modules have 1, 2 or 4 bytes including the length bytes, they areshown in the overview as a hexadecimal value, otherwise in ascending order.
