Modbus Plus - Requires expansion card or module. Modbus ASCII - generally serial port, but can be embedded in Ethernet or wireless. Modbus RTU - generally serial port, but can be embedded in Ethernet. Modbus TCP - generally Ethernet over TCP/IP. really appreciate it.ĭepends on type of Modbus. Email me with specifics and I can help more. As for software, there are many PC- based softwares out there that can be used to talk to a Modbus device. There is also pinout database on the web athttp: //rj. 5 serial pinouts varies from manufacturer to manufacturer, so you will need to consult the manufacturer for the pinout. A null modem cable is used to connect two DTE devices. If it is a DTE device, then use a null modem cable. If the device is consider a Data Communication Equipment (DCE) then you can connect using a standard straight- thru cable. You can even use a crossover Cat 5 to connect your PC to the Modbus device. If your Modbus device have Ethernet port, then connect both your PC and the device to the same network hub or switch using Cat. Modbus devices communicates via serial connections for Ethernet connections. There are two separate thing to consider: physical connection and Modbus software.įirst => physical conntection. Or do I need to make an interface board so that the Modbus device and the PC can communicate? Anyone can help? Please. Like for example, how do I gather outputs/inputs from Modbus? Do I need to do some programming?ĭepends on type of Modbus. I am learning more about MODBUS, and I would like to know how I make the Modbus device communicate with the PC. Making Modbus device communicate with a PCMaking Modbus device communicate with a PCI am learning more about MODBUS, and I would like to know how I make the Modbus device communicate with the PC. MODBUS® Protocol is a messaging structure developed by Modicon in 1979, used to establish master-slave/client-server communication between intelligent devices.
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