NX-SVG An IoT Gateway for Multi-vendor Communication
▲In light of end users' need for smart factories, there is an increasing demand for equipment manufacturers to make their products IoT-compatible. In an effort to satisfy this demand, the workload and time required to develop communication programs has become a problem. In addition, since IoT data is collected from a wide variety of devices and networks, there is an increasing need for an IoT gateway that supports various communication protocols from multiple vendors.
▲To meet this demand, we have developed the model NX-SVG gateway (fig. 1). The NX-SVG is compact and can be incorporated into equipment that must be small. In addition, it requires no communication (ladder) programs and is capable of communicating with a wide variety of devices.
■Product Overview
All the functions implemented in the NX-SVG are intended to minimize the workload of equipment development. The features are described below.
■Features
●Easy Data Transfer Setup, Data Register to Data Register
▲The NX-SVG supports the communication protocols of Azbil-made devices, programmable logic controllers (PLCs) and computerized numerical controllers (CNCs) from various manufacturers, Modbus, etc. The NX-SVG does not use the concept of sending messages to communicate. Instead, communication is set up by simply specifying the data registers of the source and destination devices (fig. 2). The engineering concept of “data register to data register” also applies to data transmission between devices with different communication protocols, so the user does not need to create communication (ladder) programs at all. This feature can dramatically reduce engineering time.
●Communication History Function Helps to Identify the Cause of Communication Errors
▲The NX-SVG automatically saves errors in communication with devices when they occur. The communication history includes the time of the error, identification of the slave device with which the error occurred, the error code received from the slave device, read/write identification, and the value that could not be read or written. The saved history can be displayed on a PC as time-series data (fig. 3), facilitating tracing, which is very useful not only for debugging during development of equipment, but also for analysis of the cause of communication errors after product shipment. There is a great difference in the time required to solve a communication problem between products that allow users to analyze the cause of the problem and those that do not.
●High Product Reliability and Many Communication Connections
▲Since the NX-SVG does not incorporate aluminum electrolytic capacitors, changes in the ambient temperature will not affect its service life. In addition, data in its internal memory can be retained without a battery in the case of a power failure, and there are no components that require regular replacement.
▲The NX-SVG is equipped with four communication ports: two LAN ports and two RS485 ports. LAN1 and LAN2 can connect 128 devices in total (if Modbus TCP master nodes are included: 136) and the RS485 ports can connect 62 devices in total, meaning that a single NX-SVG unit can connect up to 198 devices. This robust communication function is realized in spite of the unit’s compact hardware.
▲The high reliability and performance of the product greatly improve the work efficiency of engineers.
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Supplier and Product Introduction |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2020/6/29 |
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