Functionality

Primary interface	Ethernet
Protocol (1:sup:st interface)	PROFINETâ IO RT
Secondary interface	CAN
Protocol (2:sup:nd interface)	CANopenâ
CANopenâ Master	Baudrate up to 1 MBit/s Support for up to 126 CANopenâ Slaves
Serial Interfaces	2 Serial UART interfaces RS-232, RS-422 and RS-485 available as physical layer
Serial protocol	ASCII
I/O Bus interface	For up to 10 AC500 I/O Modules
Supply of the electronic circuitry of the I/O expansion modules attached	Through the expansion bus interface (I/O-Bus)
Rotary switches	For setting the IO Device identifier for configuration purposes (00h to FFh)
LED displays	For system displays, field bus indication, errors and power supply
Power supply	Via terminals UP and ZP (process supply voltage 24 V DC)