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Connect to a Modbus Device and addresses to tags.

Tutorials → Devices| Tutorial | How-to Guide | Reference

1. Create Device Channel

1. Navigate to Devices → ChannelsProtocols
2. Select Modbus
3. Click on New Add new channel:
   • Channel Name: ModbusChannel
   • Protocol: Modbus Master ProtocolSettings:
   • Interface: TCP/IP
   • Port: 502
   • Timeout: 3000ms

2. Add Device Node

1. Go to Devices → Nodes
2. Create node:
   • Name: PLC1
   • Channel: ModbusChannel
   • Station: IP Address (use 127.0.0.1 for simulator)
   • Port 502
   • Device ID: 1

3. Create Device Points

1. Navigate to Devices → Points
2. Add points:

Digital Input:

• Tag Name: PLC1_DI_001 TankFarm/Tank1/Level
• Node: PLC1
• Address: 10001 (Modbus coil) 40001 
• Data Type: DigitalNative
• AccessType: ReadWrite

Analog Input:

• Name: PLC1_AI_001 TankFarm/Tank2/Level
• Node: PLC1
• Address: 30001 (Modbus input register) 40002 
• Data Type: IntegerNativeScaling
• AccessType:
Enable if needed

Map Devices Points to Tags

1. Go to Unified Namespace → Tags
2. Select existing tag: PLC1_AI_001
3. In Address column: N0001

• ReadWrite

4. Starting Modbus Device Simulator

For testing without real hardware:

1. Devices → Protocols Channels
2. Select ModbusChannel
3. Run Modbus Start Simulator
4. Monitor values, input values

5. Test Communication

1. Start Runtime (F5)
2. Open Devices → Monitor
3. Check status :
   • Green = Connected
   • Red = Error
   • Yellow = Timeout

Troubleshooting

Next Steps

1. (if the ActivityCounter is increasing and LastErrorCode stays fixed, it means everything is running properly)

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