System Overview
Valmet (formerly Metso) IQ is a leading QCS platform for paper and board production. The Dilution Control System integrates with Valmet IQ via Modbus TCP or OPC interface to receive basis weight profile data.
Valmet and Metso merged their paper technology businesses. Systems may carry either brand name. Configuration is similar for both Valmet IQ and Metso IQ platforms.
Supported Systems
| System | Interface | Notes |
|---|---|---|
| Valmet IQ | Modbus TCP, OPC | Current platform |
| Metso IQ | Modbus TCP, OPC | Previous generation |
| Valmet DNA with QCS | Modbus TCP, OPC DA | Integrated DCS/QCS |
| Damatic QCS | OPC, custom | Legacy system |
Interface Options
Modbus TCP (Recommended)
Valmet IQ systems can export profile data via Modbus TCP. This requires configuration in the Valmet IQ Modbus Gateway or similar component.
OPC DA/UA
Valmet DNA and IQ systems provide OPC servers for data access. Use when Modbus is not available or when additional process data is needed.
Configuration Steps
Valmet-Side Configuration
Contact your Valmet service engineer to configure:
- Enable Modbus TCP Gateway in Valmet IQ
- Configure profile data export (basis weight CD profile)
- Set up profile array in Modbus registers
- Export profile status and average
- Document the register addresses
Dilution Control Configuration
Connection Settings
| Scanner Type | Valmet / Metso IQ |
| Interface | Modbus TCP |
| IP Address | [Valmet Gateway IP] |
| Port | 502 |
| Slave ID | 1 |
Profile Settings
| Databoxes | 200 |
Match Valmet configuration |
| Profile Register | [From Valmet config] |
Starting address |
| Data Type | Float 32-bit |
IEEE 754 |
| Byte Order | Big Endian |
Verify with Valmet |
Testing & Verification
-
Test Connection
Verify network connectivity and Modbus connection
-
Verify Profile
Compare profile display with Valmet IQ operator station
-
Check Values
Verify profile average and values are in expected range
Contact Valmet Automation for assistance with Modbus Gateway configuration and register mapping.