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Modbus driver v1_8 (.zip) 24.5 mb 24.5 mb; Add to my Documents Copy URL. Product Ranges: PowerSuite. Files for Download. Modbus driver v1_8. I'd like to receive news and commercial info from Schneider Electric and its affiliates via electronic communication means such as email. Unlike other Modbus to OPC interfaces, the OPC Server for Modbus can grant and deny access to tags based on user login. The Modbus OPC Server is a powerful tool that enables a secure access to your Control and Automation systems and opens new connectivity horizons to other parties and it is available at an unbeatable price.
How to connect voltage monitoring meter with RS485 out, to a computer with Modbus RTU? Should I use a converter to RS232 and connect to serial COM port of computer? Should I use RS485 to USB converter to connect? Can I connect directly to serial COM port from A,B and Ground of RS485 using D9 connector pin? Then A,B and Ground to which pins of D9 in Modbus RTU? ND20 pinoutRS485 Details
Arun
ArunArun
closed as too broad by Toby Speight, mpromonet, Leandro, Vlad274, drhagenJul 29 at 20:46
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3 Answers
- Yes, you should use a RS485 to USB converter to connect the ND20 with your computer.
- At minimum you need to connect the A (sometimes called '-') and the B (or '+') line of your ND20 to the same lines of your RS485/USB adapter. Check your RS485/USB adapter manual for the pinout. Remember, the 'A' line can alternatively be called '-', and 'B' might be called '+'. See here for more RS485 application info.
- Connecting GND is recommended, though in most situations it should work without.
- You need to know the baud rate / bits per second (9600? 19200?) the ND20 uses. You need to set this in the PC application.
- After having everything connected and ready to operate, you need use a PC application that accesses the RS485 converter ('COM' device on Window, e.g. 'COM6'). The PC application needs to request measurement values and receive the results according to MODBUS RTU protocol specification. Our free Docklight evaluation can help with MODBUS, but the most convenient solution is a small MODBUS master tool like this new freeware called QModMaster.
Oliver HeggelbacherOliver Heggelbacher
option 1: PC --> USB to RS232 --> RS232 to RS485 --> RS485 device
option 2: PC --> USB to RS485 --> RS485 device
option 3: PC --> RS232 to RS485 --> RS485 device
you need usb to rs485 / rs232 to rs485 convertors
As rs485 is floating, you may need ground to be connected for reliable comms
BBMBBM
You can connect using USB-RS485 converter. Don't know about other methods but It worked for me.For details how to communicate from start to end have a look at this video:https://www.youtube.com/watch?v=X3RW-0e_PSI
This program worked windows & raspbian only difference was port name in both...
Zeeshan ChZeeshan Ch