During system commissioning, the primary focus is typically on functional and quality tests of individual components. In practice, however, irregularities in PROFINET communication often arise that are intermittent and difficult to reproduce. These can result in unnecessary downtime, added troubleshooting effort, and increased project costs.

The PROFINET Agent Blond from Indu-Sol provides additional diagnostic data where the PLC alone does not deliver sufficient insight. Functioning as an intelligent TAP (Test Access Point), Agent monitors communication between the controller and devices and records anomalies such as telegram gaps on a device-by-device basis. The Agent can be seamlessly integrated into the PLC configuration via a GSDML file. Further the diagnostic data can be accessed directly through the diagnostic buffer or visualised on the HMI if required.

The Agent Blond also offers significant benefits for service and maintenance. Through remote PLC access, service engineers can evaluate communication quality in advance and identify potential error sources. This enables precise preparation prior to on-site deployment. This proactive approach shortens troubleshooting time during both commissioning and services, allowing the Agent to deliver a swift return on investment (ROI).


Agent Blond reports anomalies in PROFINET communication directly to the PLC diagnostic buffer. This creates transparency, supports targeted corrective action, and helps to avoid prolonged commissioning phases. (Source: Indu-Sol)

Company profile – About Indu-Sol

Reliable and interference-free communication in OT networks is a prerequisite for continuous production. Indu-Sol GmbH, an independent and cross-industry technology company, develops innovative solutions that enable objective assessment of quality, stability and security in OT networks. The company serves as a comprehensive partner, offering end-to-end support through network consulting and planning, supply of infrastructure and diagnostic components, and expert assistance for commissioning, maintenance and troubleshooting. In addition, a comprehensive portfolio of practice-oriented training programmes ensures that customers are fully equipped to operate and sustain resilient OT networks.

Meta description (SEO)

Agent Blond detects device-related anomalies in PROFINET communication and reports their type and counters directly to the PLC diagnostic buffer. Configurable triggers within the PLC generate alarms, enabling early identification of improper conditions and enabling targeted corrective measures during commissioning and on-going service.

For further details, please visit:
https://www.indu-sol.com/en/products/profinet/monitoring/profinet-agent/