78 ï Tools for Configuring and OperatingConfiguring the BluetoothÆ Module 750-644WAGO-I/O-SYSTEM 750I/O Modules4.2 Configuring the BluetoothÆ Module 750-644In order to work with the BluetoothÆ module 750-644, you must first set up thecommunication connection to your node. Then read the node configurationand select the desired module in the navigation or node view.Next, set the necessary process data and mailbox size in the parameterizationdialog. After that, you can set the desired operating mode for the master in theprocess data dialog or select a slave for further processing from the list ofslave addresses.Use the diagnostic function to eliminate configuration errors.4.2.1 Setting the BluetoothÆ Process Data and Mailbox SizeIf the parameterization dialog is not open, select Settings in the context menuof the selected module (node view or navigation).Using the [Data Frame] button in the symbol bar, open a dialog in which youestablish the size of the process image in the internal data bus 12, 24 or 48bytes. Choose 6, 12 or 18 bytes as the mailbox size.NoteThe available combinations of possible selections correspond to the configu-rations projectable by PROFIBUS or CANopen type files.To display the standard values for the module, press the [Default] button. Thedisplayed values can then be changed.Transfer the set values to the permanent memory of the module by pressingthe [Apply] button; exit the dialog by pressing [Close].4.2.2 Setting the ModeIf the parameterization dialog is not open, select Settings in the context menuof the selected module (node view or navigation).The area Device Role displays whether the module is configured as master orslave. Under that, in the Operating mode area are three buttons: [Configura-tion], [Communication (Ad-hoc)] and [Communication (Realtime)]. Pressone of these buttons to transfer the module to the respective mode or respec-tive profile. No explicit writing to the module is necessary.