PROFIBUS (PROcess FIeld BUS) is an RS-485 based fieldbus network, capable of multidrop nodes. It is a widely popular fieldbus network that comes in two main styles: PROFIBUS-DP and PROFIBUS-PA. It is complimented by its Ethernet based counterpart, PROFINET.
The PROFIBUS Device Certificate confirms that the SI-P3 series of communication option cards have successfully passed the certification tests with the following PROFIBUS scope; DP-V0 (MS0, Sync, Freeze, Fail_Safe, Set_Slave_Add), DP_V1 (MS2, I&M) and Physical Layer (RS485).
Network Comms-Profibus, Network Communications Options, 1000 Series PROFIBUS