To check data on Modbus via Modscan, follow these steps:
Download and install Modscan from the internet.
Connect your Modbus device to your computer using a serial or Ethernet cable.
Open Modscan and click on "File" -> "New."
In the "New Project" dialog box, select your connection type (serial or Ethernet) and enter the necessary details (such as the COM port or IP address).
Click "OK" to create the new project.
Click on "Communication" -> "Connect" to establish a connection with the Modbus device.
In the "Data Table" section, select the type of data you want to read (such as input registers or holding registers).
Enter the starting address and the number of registers you want to read.
Click on "Read" to read the data.
The data will be displayed in the "Data Table" section.
You can also write data to the Modbus device by selecting the "Write" option and entering the data you want to write.
When you are finished, click on "Communication" -> "Disconnect" to close the connection.
Note: Modscan is a powerful tool for testing and troubleshooting Modbus devices. However, it's important to use it carefully and follow the manufacturer's guidelines to avoid damaging the device or causing other problems.