The document outlines a detailed process for the deployment and verification of an Access Control Module associated with an injection molding machine within a Manufacturing Execution System (MES). The process is divided into four key sections:
I. Pre-configuration Preparation:
Access Control Module Deployment: This involves the integration of a dedicated RC calibration access lock node into the MES, which is hard-bound to the injection molding machine's production start access.
Verification Rule Preset: The document outlines the pass/fail criteria for RC calibration, which includes three critical indicators: RC capacitance deviation must be ≤5%, filter cutoff frequency deviation must be ≤10%, and temperature fluctuation should not exceed ±0.5℃.
Communication Link Verification: Ensures stable bidirectional communication between the temperature controller and the MES, with an acceptable data upload delay of ≤1 second to prevent delays in unlocking access.
II. Automatic Verification and Unlocking Process:
Automatic Calibration Data Upload: Post-maintenance, the RC parameters and temperature data are uploaded automatically to the MES.
System Automatic Verification: The MES benchmarks this uploaded data against the pre-set criteria, triggering an unlocking command if all indicators are satisfactory.
Automatic Production Access Resumption: The control system of the injection molding machine receives the unlock command, thereby automatically restoring production start permissions without necessitating manual intervention.
III. Abnormal Fallback Mechanism:
Calibration Failure Interception: If the uploaded data does not conform to standards, the MES retains the locked access status and sends a secondary calibration task to maintenance personnel.
Timeout Warning: If verification is not completed within two hours of initiating the calibration task, a warning message is dispatched to process management personnel to mitigate prolonged machine downtime.
Manual Emergency Unlock Channel: An administrator access point is established for temporary manual unlocking of production permissions in extreme circumstances to ensure emergency production needs are satisfied.
IV. Closed-Loop Data Archiving
All data regarding calibration verification and access unlocking is systematically archived within the process, serving as a reference for subsequent adjustments to the RC calibration cycle.
This structured procedure aims to enhance operational efficiency and reduce downtime through automation while maintaining stringent control and verification measures.
