The Open Modbus/TCP software solution developed by Siemens enables easy integration of the entire Simatic automation family in heterogeneous or third-party system landscapes. The different systems are linked up via Industrial Ethernet by means of an open communications protocol. This allows existing systems to be expanded or modernized with Simatic system technology gradually and cost-effectively.
The increasing use of Ethernet-based data communication in both industrial and office environments requires the modernization or expansion of existing automation systems. The result is often a heterogeneous system landscape. Linking it up to a powerful higher-level system necessitates the use of open, preferably standardized communications protocols. The Open Modbus/TCP solution developed by Siemens is based on Modbus, a protocol that is used all over the world and is already supported by many manufacturers. The communications protocol is an open Internet draft standard that has already been incorporated in the IETF (Internet Engineering Task Force). As a result of this disclosure, any manufacturer or user can implement this protocol.
Open Modbus/TCP now also supports central processing units with Profinet capability (PN-CPUs) and thus the entire range of Simatic automation devices. There are three Modbus variants available for integrating different Simatic systems: the Modbus block for communications processors is suitable for Simatic S7-300 and S7-400 systems. For Modbus communication, a CP343-1 or a CP443-1 communications processor is needed as well. The Modbus block for central processing units with Profinet capability is used to link up Simatic S7-PN CPUs and ET200S-PN CPUs. For Modbus communication in this case the integrated Profibus interface is used. For Simatic S7-400H systems, the Modbus block with redundancy functionality is used and, for communication purposes, a CP443-1 communications processor is needed for each subsystem as well.
The range of functions performed by all Modbus variants supports server mode, client mode and conformance class 0 with the function codes 3 and 16. The block with redundancy functionality also makes it possible to establish a communications link that is redundant and therefore fail-safe at the same time. For communication between Simatic stations and other Modbus nodes, native TCP connections that are based on the standard functions of the Simatic S7 library are set up. All Modbus blocks have multi-instance capability. Configuration is carried out with the standard Simatic STEP 7 tool. A software wizard is also available for configuring the Modbus blocks for Profinet CPUs.
The Siemens Industry Sector (Erlangen, Germany) is the world's leading supplier of production, transportation and building systems. Integrated hardware and software technologies combined with comprehensive industry-specific solutions enable Siemens to enhance the productivity and efficiency of its customers in industry and infrastructure. The Sector comprises six Divisions: Building Technologies, Industry Automation, Industry Solutions, Mobility, Drive Technologies and Osram. In fiscal 2007 (ended September 30), Siemens Industry generated sales of approximately EUR40 billion (pro forma, unconsolidated) with around 209,000 employees worldwide.
With the business activities of Siemens VAI Metal Technologies, (Linz, Austria), Siemens Water Technologies (Warrendale, Pa., U.S.A.), and Industry Technologies, (Erlangen, Germany), the Siemens Industry Solutions Division (Erlangen, Germany) is one of the world's leading solution and service providers for industrial and infrastructure facilities.
Dr. Rainer Schulze | Siemens Industry Solutions
Researchers move closer to completely optical artificial neural network
23.07.2018 | The Optical Society
Reversing cause and effect is no trouble for quantum computers
20.07.2018 | Centre for Quantum Technologies at the National University of Singapore
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
23.07.2018 | Materials Sciences
23.07.2018 | Information Technology
23.07.2018 | Health and Medicine