2 Connecting to SIEMENS PLCs 2 Click the [Next>] button. 3 Set the Module Position to "0" and click the [Next>] button. Precautions for Correct Use Precautions for Correct Use In order to communicate with the NB, the Module Position must be "0". If yours not the case, change the CPU configurations and set the Module Position to "0". 2-12 NB-series Programmable Terminals Host Connection Manual (V108)