Eltech: HMI IP integration

Overview

This project integrates the Power, Humidity and Temperature monitoring on the busbar panel into the existing centralized SCADA system. Before, it could only be monitored locally. The team added a LAN-to-Ethernet converter, configured Modbus communication and addressing, and adjusted IP addresses so monitoring data is sent to and shown on the central SCADA.

Challenges

• The existing system was local monitoring only and was not connected to the centralized SCADA.

• The monitoring devices needed a communication link to the existing Ethernet network.

• Modbus addressing had to be adjusted so the SCADA reads the Power, Humidity and Temperature data correctly.

• The IP address and network configuration had to be adjusted so the devices can communicate on the existing SCADA network.

• Communication had to stay stable without disturbing the existing system.

Solutions

• Added and configured a LAN-to-Ethernet converter as the communication interface between the local monitoring system and the Ethernet network.

• Configured Modbus communication and addressing to match the data mapping on the device.

• Set the IP address configuration on the devices and aligned it with the existing SCADA network.

• Tested communication and validated data to confirm the Power, Humidity and Temperature values are read correctly on the SCADA.

• Integrated the monitoring data into the centralized SCADA, so the busbar panel condition can be monitored from one system.

Lessons learned

• Integrating an existing system requires understanding of the network architecture, IP addressing and the Modbus communication protocol.

• Validating the register/address mapping is essential, so the data the SCADA receives matches the actual field data.

• Adding a communication gateway or converter can be an effective way to integrate existing devices without major changes to the local system.

• Commissioning should proceed in stages: device communication, network connectivity, Modbus data validation, SCADA integration.

• Documenting IP addresses, Modbus addresses, register mapping and network configuration is important for later troubleshooting and maintenance.