The launch of the LOGO!8 in 2014 brought great change to the world of the Logo. Features such as built-in Ethernet meant that Logos could now communicate with other Logos as well as to higher level Simatic PLCs and HMIs. Additionally, it meant no more pricey programming cables, as well as a built-in web-server. Just a simple Ethernet cable is needed for programming. The higher resolution screen of the Base Module (BM) as well as the Text Display (TDE) has three backlight colours (white, yellow and red) which aids in bringing attention to the device in emergency situations. A new add-on module – CMR2020 – allows the Logo to send and receive via SMS, as well as track GPS positions. The face-lifted design of the LOGO!8 has brought the 20-year heritage of what started as a smart relay into the modern era of basic automation.
• Expansion modules of the LOGO!8 and previous models are not interchangeable.
• While the LOGO! 0BA6 is still produced by Siemens, it is no longer stocked locally in South Africa. All stock is ex-Germany.
• As the LOGO!8 has all the functionality (and more) of the LOGO! 0BA7, the product life cycle of the latter has been moved into phase-out. Again, this item is not stocked locally. There has been no indication of a date for product cancellation.
It has been seven years since the launch of the S7-1200 and TIA Portal back in 2009, and a relatively short road of fantastic innovation it has been. With version 1 of the range being the replacement of the S7-200, the S7-1200 has grown into a PLC capable of replacing many lower-end S7-300 systems. With the latest version sitting at V4.1, the S7-1200 has features such as a built-in web-server, onboard Profinet, motion control functionality, revised PID control blocks, 1 MHz high-speed counters and pulse train outputs. The most important feature of the range, however, is the communication capabilities. Protocols such as Profinet, Profibus, Modbus TCP, Modbus RTU on RS-485, PtP on RS-232, GPRS, GSM, DNP3, IEC and ASI bus are available throughout the S7-1200 range. Siemens can offer customers flexibility not only in the high-end market, but in smaller applications as well.
• After seven years of production in parallel with its successor, the S7-200 has finally been moved into phase-out. As a result, Siemens South Africa will no longer stock the items locally. All orders will be ex-Germany. It is advised that customers who have not yet migrated start to keep spares for their S7-200 ranges as these parts will become scarcer and more costly as time goes on.
• Any customers looking to migrate their S7-200 systems are welcome to contact Siemens for assistance. Tools are available to migrate MicroWin projects to TIA Portal.
• Confusion has arisen around the V3 S7-1200 PLC. Siemens has not moved the V3 into phase-out because of the software requirements of the V4 PLC. V4 has a requirement of TIA Portal V13 or higher as the engineering station. As some customers were reluctant to upgrade their TIA Portal software, the V3 PLC continued in production. Siemens South Africa only keeps the latest V4 PLCs in stock, so it is recommended that all configurations be changed to the V4 PLC and TIA V13 where possible.
• How to tell the difference between V3 and V4 PLCs: 6ES7214-1AG31-0XB0 donates V3; 6ES7214-1AG40-0XB0 donates V4.
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