AH500 Module Manual 10. After scanning is over, 10PFBM module will show up beside the PLC CPU module on the rack. 11. The registers in the normal exchange area in AH10PFBM-5A display if the current state of the PROFIBUS DP network is normal. Click the following place marked in pink box to set the registers in the normal exchange area while configuring the hardware in the ISPSoft software. 12-18