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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 Settings:Protocol
   • 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
• ReadWrite

Step 4: Map to Tags

Method 1 - Direct Mapping:

1. Go to Unified Namespace → Tags
2. Select existing tag
3. In Device column, select: PLC1_AI_001

Method 2 - Auto-create Tags:

1. In Devices → Points
2. Select points
3. Right-click → Create Tags
4. Tags created with same names

4. Starting Modbus Device Simulator

1. Devices → Channels
2. Select ModbusChannel
3. Run Modbus Simulator

5. Test Communication

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

Troubleshooting

Using Device Simulator

For testing without real hardware:

1. Devices → Tools → Simulator
2. Select protocol matching your channel
3. Start simulator
4. Values update automatically

Next Steps

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

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