Troubleshooting
Problem
Communication failure / Data stopped updating in IBM Maximo Renewables
Symptom
Plants are not communicating with IBM Maximo Renewables, resulting in no data updates or synchronization issues
Cause
Plant communication issues in IBM Maximo Renewables can occur due to stopped or unstable Cormatix_* services, network or firewall restrictions blocking port 8883, low internet bandwidth, or device-level problems such as OPC/Modbus devices not sending data or being unreachable
Environment
1. Service Check:
Confirm that the Cormatix_* service is running.
If it is stopped, start the service.
If it is running, verify the deployment path and ensure the hidden data folder exists.
2. Data Folder Check:
If data is present: This indicates a network restriction preventing data from reaching IBM Maximo Cloud. Verify that the internet speed is at least 2 Mbps and that port 8883 is accessible.
If data is absent: This points to a device-level issue.
For OPC devices, check if data is updating using tools such as KepServer or UA Expert, and validate the OPC URL connectivity.
For Modbus devices, verify device IP reachability using ping or a third-party tool like Modscan.
Modbus data check guide: click here
OPC data check guide: click here
3. Network/Firewall Check:
Ensure that port 8883 is open and the internet bandwidth meets the required threshold.
Diagnosing The Problem
The issue is diagnosed by systematically checking the service, data folder, device, and network:
Service Check: Verify that the Cormatix_* service is running. If stopped, start it; if running, check the deployment path for the hidden
datafolder.Data Folder Check:
Data present: Indicates a network restriction preventing data from reaching IBM Maximo Cloud. Check internet speed (≥2 Mbps) and port 8883 connectivity.
Data absent: Suggests a device-level issue. For OPC devices, verify data updates via third-party tools and OPC URL connectivity. For Modbus devices, test device IP reachability using ping or other tools.
Network/Firewall Check: Ensure port 8883 is open and internet speed is sufficient.
Resolving The Problem
Service: Start or restart the Cormatix_* service if stopped or unstable.
Network: Ensure minimum 2 Mbps internet speed; check port 8883. If blocked, coordinate with IT to whitelist the IP and port.
Device/Data Source:
For OPC, ensure data updates and OPC URL connectivity.
For Modbus, ensure device IP is reachable and SCADA/PLC systems are functioning properly.
Support Case: If all checks pass but data still does not update in Maximo, open a support case with IBM, providing details of all diagnostic steps taken.
Document Location
Worldwide
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Document Information
Modified date:
26 February 2026
UID
ibm17252532