NPort Real COM Mode for Modbus Applications Tech Note
■Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Modbus has become a standard protocol for TCP/IP networks, e.g. Modbus TCP. But some legacy applications can't support Modbus TCP. In this situation, when users want to extend their communication to TCP/IP networks, they can use NPort's Real COM Mode.
■Real COM Mode can provide a virtual COM port on a computer, just as if it is on a computer's native serial port. Users can install the Real COM driver on the Modbus system, which creates an additional COM port. This serial port is mapped to the IP address of the remote NPort.
■Hence, the NPort can be located at remote locations, eliminating costly modem connections while providing real-time access to Modbus RTU/ASCII slave devices via Ethernet (Figure 1)
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NPort 5000A 、 NPort 5000 、 NPort 5100A series 、 NPort 5100A 、 NPort 5200A series 、 NPort 5200A 、 NPort 5400A series 、 NPort 5400A 、 NPort IA5250A 、 NPort 5100 series 、 NPort 5100 、 NPort 5200 series 、 NPort 5200 、 NPort 5400 series 、 NPort 5400 、 NPort 5600 、 NPort 5600 series 、 NPort IA5150 、 NPort IA5250 |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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October 30, 2014 |
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1.1 MB |
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