Issue link: https://iconnect007.uberflip.com/i/1216587
56 SMT007 MAGAZINE I MARCH 2020 HSMS standard. HSMS does not specify the physical layer. Any physical layer supported by TCP/IP can technically be used, but typically everyone just uses an Ethernet network inter- face controller (NIC) with an RJ45 port. A major advantage of the SECS standard is that it defines messages and their content; it defines how the messages are used together to perform a function. Equipment manufacturers are left to decide what messages to use to per- form functions that were performed manually before. The GEM standard is built on top of SEMI standard SECS-II (E5). The GEM standard has been adopted by other industries, like the photovoltaic (solar cell) industry, and used by many in the elec- tronics industry. It can serve as a model for the PCB fabrication industry by reviewing these SEMI standards: 1. SEMI E4: SEMI Equipment Communication Standard 1 Message Transfer (SECS-I) 2. SEMI E5: SEMI Equipment Communication Standard 2 Message Transfer (SECS-II) 3. SEMI E30: Generic Model for Communications and Control of Manufacturing Equipment (GEM) 4. SEMI E37: High-Speed SECS Message Service (HSMS) Generic Services 5. SEMI E81: Specification for CIM Framework Architecture 6. SEMI E96: Guide for CIM Framework Technical Architecture 7. SEMI E128: Specification for XML Message Structures MAPS™ Protocol: Message Automation and Protocol Simulation As explained in an overview tutorial by GL Communications Inc. [4]: "MAPS specify a set of standard commu- nication services for factory automation and has been accepted as an international standard by the ISO. It is a protocol simu- lation and conformance test tool that sup- ports a variety of protocols for such factory floor controllers as PLC, robots, group con- trollers, and cluster controllers. MAPS is one of the oldest and most used of the fac- tory floor automation protocols, being pio- neered by General Motors and adopted by General Electric for its factories." "MAPS is based on the reference model for open systems interconnection (OSI) of the International Organization for Stan- dardization (ISO). It has three main com- ponents: file transfer, access, and man- agement services; manufacturing message specification services; and X.500 services. The protocol includes SIP, MEGACO, MGCP, SS7, ISDN, GSM, MAP, CAS, LTE, UMTS, SS7 SIGTRAN, ISDN SIGTRAN, SIP I, GSM AoIP, Diameter, and others. This message automation tool covers solutions for both protocol simulation and protocol analysis. The application includes various test plans and test cases to support the testing of real- time entities. Along with automation capa- bility, the application gives users the unlim- ited ability to edit messages and control scenarios (message sequences). 'Message sequences' are generated through scripts." "MAPS is designed to work on TDM interfaces as well as on the IP/Ethernet interfaces. MAPS also supports 3G and 4G mobile protocol standards for testing the rapidly evolving mobile technologies. MAPS can simulate radio signaling proto- cols, such as LTE (S1, eGTP, X2) interfaces and UMTS (IuCS, IuPS, IuH), GPRG Gb, and GSM A over an IP transport layer." "MAPS test suite is enhanced to simulate multiple UEs and IMS core elements, such as P-CSCF, I-CSCF, S-CSCF, PCRF, MGCF in IMS core network. With the help of mobile phones and other simulated wireless net- works, the VoLTE Lab setup can be oper- ated in real-time for making VoLTE calls and for interworking with PSTN and VoIP networks. MAPS is enhanced to a high-den- sity version and a special purpose 1U net- work appliance that is capable of high call intensity (hundreds of calls/sec) and the high volume of sustained calls (tens of thou- sands of simultaneous calls/1U platform)."