Multi-Master PPI Networks
Figure 7-11(2003.5版手册P216) shows a sample network of multiple masters with one slave. The programming station (STEP 7--Micro/WIN) uses either a CP card or a PPI Multi-Master cable. STEP 7--Micro/WIN and the HMI
device share the network.
Both STEP 7--Micro/WIN and the HMI device are masters and must have separate network addresses. When the PPI Multi-Master cable is being used, the cable is a master and uses the network address supplied by STEP
STEP 7--Micro/WIN S7-200 HMI 7--Micro/WIN. The S7-200 CPU is a slave.