Hướng dẫn bằng hình ảnh truyền thông giữa 2 PLC s7 300 qua mạng Profibus
COMMUNICATION BETWEEN 2 CPU 313C-2DP I.CPU Slave 1. Make new profibus network 2. From properties of DP choose: + Address + Operating mode: slave + Configuration : make one virtual module 3. Save and compile it II.CPU Master 1. Make slave station: drag and drop CPU31x from configuration station 2. Click the button Connect 3. Choose tab Configuration: make virtual I/O slot connection III. Program 1. Insert OB: 80->87,122 2. In OB1(Slave, don’t need in master) drag and drop: FC1 DP_SEND, FC2 DP_RECV 3. Use virtual I/O as real I/O: input of mater is output of slave and inverse (example: IB8 is virtual I/O- virtual output QB8 from master, QB124 is real I/O of slave station)