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Modbus TCP Slave
Overview
If you have a Modbus slave device that you would like to link to the NBnano platform, this guide will walk you through the process. We will use an example of a local air quality sensor that is already set up with a driver in the IQnexus Marketplace.
Steps to Add a Modbus Slave Device
- Prepare the Driver:
- Navigate to the IQnexus Marketplace, select your driver, and choose ‘New Device’ from the action menu.
- Create a New Device:
- The create device screen will display, and you should see the fields required to set up your Modbus device, assuming the driver is set up correctly.
Fields to Configure:
Modbus Master IP Address:
- This field defines who can retrieve data from this device.
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- If set to 0.0.0.0, anyone can access the device via Modbus, provided they know the IP.
- To restrict access, set this field to the specific IP address you will use to retrieve the data.
Modbus Poll Slave IP:
- Enter the IP address of the Modbus slave device from which you want to retrieve data.
- For example, 192.168.178.106.
Modbus Poll Port:
- This is the port used by the Modbus device to exchange data.
- For example, 30000.
Modbus Poll Device ID:
- The device ID used by the Modbus sensor.
- For example, the sensor ID is 1.
Modbus Poll Polling Rate (seconds):
- This defines how often the device should request data from the slave device.
- For example, setting this to 30 seconds will make the platform request data from the sensor every 30 seconds.
- The value can be rounded up to a multiple of 10 seconds (e.g., setting it to 43 seconds will poll every 50 seconds).
Finalizing the Device Setup:
- After entering the required details, click Save to add the device.
- Once the device is saved, it will start showing data in the logs according to the polling rate you set.
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