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Latest Vutlan drivers (from August 2021) support Modbus RTU read and write functions for all monitoring systems. |
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Function and purpose
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You can use a range of Sensors/Meters/Devices for Modbus.
Testing VT485m PCB using two Vutlan controllers
This section is useful for installers.
You can test the VT485m PCB using x2 Vutlan monitoring units.
Install VT485m on Vutlan monitoring system A and Vutlan monitoring system B.
Connect B- to B-. Connect A+ to A+.
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Do not connect the GND!!! |
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| VT485m | Cables | VT485m |
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| B- | red | B- |
A+ | blue | A+ |
Activate Modbus RTU settings on both systems. You can leave all settings by default on both systems. Web UI >> Preferences panel >> Modbus RTU tab >> Enable Modbus RTU
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Web UI >> System tree panel >> Add element “+” sign >> Modbus RTU (reading) >> Leave all settings by default >> Additional tab >> Test button
The VT485m which is the master will blink with a blue LED.
The VT485m which is the slave will blink with a red LED.
Test complete!
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It is ok, if “Modbus value, “Modbus raw answer” values give errors, because the PCB are not meters. They do not have the values by themselves. |
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Vutlan s.r.o. (LLC)
Remote Infrastructure Monitoring and Control
43 ul.Svornosti, 821 06 Bratislava,
Slovak Republic