Issue link: https://iconnect007.uberflip.com/i/1213413
FEBRUARY 2020 I PCB007 MAGAZINE 15 information back and forth to the master that communicates by radio, power lines, or Ether- net. Their characteristics are shown in Table 2. Siemens Siemens has developed a special machine- to-machine (M2M) Ethernet controller to onnect legacy and other surface mounting equipment to their smart manufacturing (Figure 5). The protocols and messages used by PLCs (using the seven-level ISO communications standards) are like our modern transportation Interstate Highway System. Many kinds of ve- hicles travel on it, including various makes of cars, trucks, etc., but bicycles, pedestrians, and farm tractors are forbidden. Everything that uses this network obeys a standard set of rules to get to their destination. And like this transportation network, different protocols have different pre- defined messages but may not be in a language that you understand. For M2M, the messages need a standard language that each machine understands, even if made by different vendors. Protocols for the Electronics Smart Factory The one way to shorten the development time of any smart factory automation pro- tocol is to leverage what is already out there. Three pro- tocols have already been es- tablished in electronics man- ufacturing: 1. IPC-2591 Connected Factory Exchange (CFX) with the IPC-9852 HERMES standard. 2. Mentor, a Siemens Business Open Manufacturing Language (OML). 3. SEMI's SECS/GEM-SEMI Equipment Communica- tion Standard/Generic Equipment Model. Modeling any PCB fabrication smart facto- ry protocol after one or more of these exist- ing standards will shorten their development time. Table 2: Characteristics of ShoeBox industrial monitor. Figure 5: Siemens has PLCs and special Ethernet M2M connectivity for electronics assembly equipment. (Source: Siemens)