- #Difference between modbus rtu and modbus tcp ip serial
- #Difference between modbus rtu and modbus tcp ip pro
- #Difference between modbus rtu and modbus tcp ip software
#Difference between modbus rtu and modbus tcp ip serial
In the case of controllers, the Modbus Pass-through mode allows conversion from Modbus TCP-IP protocol to Modbus RTU protocol for access to devices equipped with RS485 or RS232 serial port via Ethernet (502 or 503 ports in the case of Z-TWS controllers). ModBUS Pass-Through function applied to data loggers. All this without ad-hoc configuration of the ModBUS RTU network. Basically data loggers can directly support the ModBUS TCP-IP Bridge function from Scada to remote I/O modules and their configuration via Z-NET4. In the case of data loggers, the integrated ModBUS TCP-IP server can perform at the same time both as a “Pass Through” for the Modbus RTU and as a ModBus protocol converter, for the benefit of easier management in the interface of SCADA systems, data collection and execution of commands.
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You can learn more about NPort in this article Choosing NPort. Now you can confidently decide between using MGate and NPort based on your specific purposes and apply them to your project.
#Difference between modbus rtu and modbus tcp ip pro
#Difference between modbus rtu and modbus tcp ip software
The software available only recognises Modbus RTU and does not work with Modbus TCP. You need to connect an electricity meter running a Modbus RTU protocol to a computer which lacks a COM port and is situated in the building next to you.
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You need to extend a RS-485 line via Ethernet, through which data will be transferred using the Modbus RTU/ASCII protocol.īest thing for this is to use two MGate gateways connected to each other. MGate is especially designed to work with Modbus protocols moreover, it facilitates the correct interconversion of protocols and minimises risk of data loss. The best way to approach this is to use the MGate gateway to convert Modbus RTU to Modbus TCP and RS-485 interface to Ethernet. You need to connect an RS-485 module of input-output with Modbus RTU protocol via Ethernet to a remote computer, on which the SCADA system is set up. This allows transfer of data from one COM port to another without any changes to it. You need to extend the RS-232 interface via Ethernet using a device running a specific protocol, for which the cable length is only 15 meters.įor this, use two NPort devices in pairing mode or TCP Client/Server mode. This requires installation of a virtual COM and specific software.
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In this case, NPort can convert the RS-485 interface to Ethernet without any changes to the transferred data. You need to process data from a barcode scanner with RS-485 interface and specific protocol onto your computer using the available software. Let’s look at a few cases of applying NPort and MGate in practice: