Over deze norm
|Commissie||Industrieel meten, regelen en automatiseren|
A SERCOS network uses slaves with integrated repeaters which have a constant delay time (trep, input ?? output). The topology consists of point-to-point transmission lines and participants. The master and the slaves are part of the network and are its participants. The connection line between the participants is a shielded CAT5 (or better) cable. Each participant has two communication ports (port 1 and port 2). Port 1 (P1) and port 2 (P2) are interchangeable (see slave 3 in Figure 1 and Figure 2 for an example). The topology can be either a ring structure or a line structure. A ring has two logical channels (see Figure 1) and a line has only one logical channel (see Figure 2). The difference between ring and line structure is that the ring has a built-in redundancy against transmission media errors (e.g. cable break) and is therefore preferred. A control unit may have one or more master interfaces depending on configuration. Each master handles only one network on the physical layer.
|Nederlandse titel||Real-time Ethernet SERCOS III|
|Engelse titel||Real-time Ethernet SERCOS III|