What this category's data includes
This category of data is sourced from DCS/SIS control systems, online process analyzers, LIMS laboratory management systems, equipment condition monitoring modules, energy metering nodes, and raw material storage tank ledgers. Daily documents cover operating procedures, process index cards, DCS trend charts, laboratory test reports, interlock bypass records, special work permits, and shift logs. Data update frequencies include real-time (such as DCS pressure and temperature readings), per-shift (such as shift logs and interlock records), and daily (such as raw material storage tank ledgers). Data fields include process parameters (units: MPa, ℃, m³/h), laboratory test result values, equipment operating status codes, and work approval numbers.
What constraints these characteristics impose on HTTP interfaces and external systems
Real-time updated process parameters require interfaces to support low-latency callbacks or short-interval polling. This prevents data lag from delaying anomaly traceability. Multi-source heterogeneous data sources require interfaces to support parallel pulling from multiple endpoints. Unify data formats before connecting to the knowledge base. Batch documents and records generated per shift or daily require interfaces to support paginated pulling and breakpoint continuation. This avoids overload from single large requests. Interlock bypass records related to hazardous media require strict interface permission verification. Unauthorized access creates security risks for these records. Steady-state maintenance of continuous production relies on real-time data comparison. Interface response timeouts cause delays in anomaly determination, which disrupts production processes.
How to set up configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
Authorization | Bearer {custom API key} | Complies with HTTP interface authentication standards, and adapts to permission control requirements for multi-system docking |
variables | {"process_unit": "ammonia synthesis unit", "data_source": ["DCS", "LIMS"]} | Limits interface query scope to corresponding production units and data sources, narrowing retrieval scope to improve traceability efficiency |
responseData | Only return fields containing process parameters, test results, and interlock records | Filters irrelevant data, reduces interface transmission load, and adapts to real-time data processing requirements |
| Interface timeout period | 30 seconds | Matches the update interval of real-time process data, avoiding data loss caused by timeouts |
| Batch pull limit | Top 100 entries | Adapts to the total volume of documents and records generated per shift, avoiding excessive data volume in a single request |
| Concurrent request limit | Calibrated based on actual measurements | Adapts to the resource management logic of FastGPT v4.17.0, and matches concurrent requirements in production scenarios |
Three common misconfigurations
- Symptom: Interface returns status code 401 Unauthorized. Cause:
Authorizationparameter is not configured correctly, or the API key's permissions do not cover the corresponding production data sources. - Symptom: Image links in document knowledge bases created via localFile show expired. Cause: No permanent storage path specified via the
variablesparameter, only temporary local file paths are referenced. - Symptom: System response slows down after multiple interfaces are called concurrently. Cause: No reasonable concurrent request limit configured, leading to exhaustion of FastGPT service resources.
How to verify a complete configuration
- Initiate an interface call, and check whether the returned
responseDatafields match the preset process, test, and interlock-related business fields. - Check the interface authentication log to confirm that the verification logic of the
Authorizationparameter takes effect normally, with no unauthorized access records. - Simulate concurrent calls from multiple interfaces, and observe whether system resource usage meets the preset load threshold.
- Pull a single historical document, and confirm that no expired prompt is displayed for its image links.
The values provided here are common starting points, and should be evaluated against the reader's own samples.