These devices – in those days often the size of a suitcase were heavy and bulk-like and only possessed a tiny processor unit – if at all. The first Programming Devices were introduced together with the installment of the early days PLC systems SIMATIC S5 dating back to the beginning of the 1980s. In comparison to modern Laptop techniques an unbelievable long life time. These systems are in some cases 25 years old or even more. Therefore many Programming Devices of the PG 740 types are still in use. You will still find a large number of PLC Units out of the Simatic S5 range. This depends on the Operating System installed, the interfaces and actual Software. It is important however to know that not all Siemens Programming Devices can communicate with every Siemens System. They are also known under brands such as SIMATIC Field PG oder Power PG. Siemens Devices are the ones which are found at nearly every facility. One of the main features however is the installment of a number of very specific interfaces such as AG, COM, MPI and others. Most Windows based Programming Devices are fitted out with Software according to the actual system running (for example Step 5 and Step 7). With the help of these portable and robust computers one can adjust, monitor or install specific programms on site. Programming devices are part of the family of HMI Operating Systems. Programming Devices – robust and portable systems for the use of programming and monitoring mobile industrial automation
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