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Temperature logging with HMI

€9,90 EUR
€9,90 EUR
Sale Sold out

Description
This SCL function block, FB_TempUeberwachung, continuously monitors a temperature variable against defined limit values, triggers an alarm if the limit is exceeded or undershot, allows manual acknowledgment, and logs the measured values with a timestamp in a ring buffer every 5 seconds. It can be run directly in the Siemens TIA Portal.

Note: All modules are designed exclusively as a learning and optimization basis and are not approved for live operation. System modules, in particular, must be finally tested and commissioned by qualified personnel before productive use.

How it works

  1. Check temperature vs. min/max limit → set alarm and keep active if limit is violated
  2. Acknowledgement signal → Reset alarm
  3. LoggingStart active → Start cycle timer (PT=T#5s).
  4. Timer expired → write current temperature value + current time to TempLog and timestamp array
  5. Increment index 0…99; if > 99, reset to 0
  6. Reset timer and start new 5 s cycle

Technical details
• Inputs: Temperature, MinLimit, MaxLimit, Acknowledgement, LoggingStart, CurrentTime
• Outputs: Alarm, LoggingActive
• Internal: Cycle timer (TON, PT=T#5s), index counter (0…99), TempLog[100], timestamp[100]
• Alarm remains set until acknowledged, even if temperature is back in the target range
• Ring buffer: automatic overflow handling for the log index
• RETURN in case of fault (e.g. limit violation and missing acknowledgment) interrupts further logic

Possible applications
• Temperature monitoring in cooling circuits, ovens, fermenters
• Monitoring in plastics, food or laboratory plants
• Retrofitting in existing systems or standalone module in machine controls
• Training projects on alarm and logging concepts

compatibility
Siemens S7-1200 & S7-1500; TIA Portal V13 and higher (V16+ recommended for PLCSIM & HMI)

Scope of delivery
• .scl file with input/output declaration, cycle timer, log arrays and comments
• Download link immediately after purchase

Support
Adjustment of limit values, log intervals, or buffer sizes, integration of additional alarm profiles, HMI tables, or SCADA/MES exports are available upon request. Contact us via shop message or email.