![]() ![]() Also, make sure you understand the Master/Slave relationship when using the modbus protocol if you are using multiple nodes on the modbus network. Look for something that supports modbus serial. OFS Factory Server from Schnieder Electric is a good choice. I would suggest using an OPC server to accomplish this. This RS232 Data Logger is a free, open-source application for monitoring serial interface activity. If you are interested in this approach, the modbus protocol is available in detail on the internet.įrom your description, it sounds like you would like to have some way to bring in data from a device that talks modbus into a PC via modbus serial and make use of that data somehow. Portmon for Windows Portmon can monitor and display all serial port activity in a system. Supports ABB RP570, ABB SPA-bus and NMEA 0183 protocols. It can monitor serial port communication through software or with a simple hardware solution. You would need detailed information on how the protocol works and good software writing skills to pull this off. SerialMon is a free RS232 port analyzer for Windows that takes up little space. If you want to get some data from a modbus instrument, you need to set up rs232 communications and parse out the modbus information from the data stream. Modbus is just a protocol that can be communicated over rs232/422/485 or ethernet. ![]()
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