ABB AM811F 3BDH000050R1 Battery Module AM 811F for Freelance AC 800F. Without battery. To use together with PM 802F and PM 803F. Without battery SB 808. Software V7.1SP2a or higher is mandatory. The battery module provides for retention of the AC 800F RAM data when the AC 800F is off or has no Ethernet module. The battery module is used when the AC 800F is used as a stand-alone device, i.e. when it has no Ethernet connection, or when the only existing Ethernet module is to be replaced without the AC 800F loosing its configuration data.
ABB AC 800F controller has a modular structure. The CPU is designed as a backplane to which various modules ?C power supply units, Ethernet and fieldbus modules ?C can be attached in line with the application. On the fieldbus side, modules for PROFIBUS-DPV1, FOUNDATION Fieldbus HSE, Modbus, Telecontrol IEC 60870-5-101, Telecontrol IEC 60870-5-104 and CAN for Freelance Rack I/O are available.