文件列表:

src/
tests/
.DS_Store
Industrial_product.png
PLC_SY.lld
requirements.txt

## Python3.7 Virtual Environment Dependencies ```javascript pip install -r requirements.txt ``` ### Usage To Set the `OPC-UA` server: ``` python src/plc_simulator.py ``` Check logs: ``` tail -f plc_simulator.log ``` To run the tester: ``` python -m pytest tests ``` The `PLC_SY.lld` file is the ladder code where Siemens LOGO!Comfort software was used #### Tester * GRAFCET logic: `test_aa_grafcet.py` * Tank high level: `test_alarm_0.py` * Tank low level: `test_alarm_1.py` * High temperature (>80): `test_alarm_2.py` * Low temperature (<10): `test_alarm_3.py` * Discharging door open: `test_alarm_4.py` * Emergency activated: `test_alarm_5.py` ## Digital Inputs (DI): - DI0: START BUTTON - DI1: RUN BUTTON - DI2: STOP BUTTON - DI3: EMERGENCY BUTTON - DI4: RESET BUTTON - DI5: LOWER LEVEL FLOATER - DI6: LOW LEVEL FLOATER - DI7: HIGH LEVEL FLOATER - DI8: HIGHER LEVEL FLOATER - DI9: DISCHARGING GATE SENSOR ## Digital Outputs (DQ): - DQ0: INPUT VALVE - DQ1: OUTPUT VALVE - DQ2: HEATING SYSTEM VALVE - DQ3: MOTOR-CONTROLLED DISCHARGING GATE ## Analog Inputs (AI): - AI0: SENSOR TEMPERATURE ## Alarms: - A0: Tank high level - A1: Tank low level - A2: High temperature (>80) - A3: Low temperature (<10) - A4: Discharging door open - A5: Emergency activated ### Main Procedures Logic Table #### STARTING | Condition | Action/Procedure | Logic (0, 1) | |------------------------------------|----------------------------------------------|--------------| | Start button pressed (DI0 is True) | If DI9 is True, Close motor-controlled discharging door (DQ3 = False) | 0, 1 | | Start button pressed (DI0 is True) | Open In Valve (DQ0 = True) until DI6 is True; | 1 | | Tank level reached (DI6 is True) | Close In Valve (DQ0 = False) | 0 | #### RUNNING | Condition | Action/Procedure | Logic (0, 1) | |---------------------------------|-------------------------------------------|--------------| | DI1 is True | Open In Valve ; RUN button pressed | 1 | | High level not reached (DI7 is False)| Continue tank filling process | 1 | | High level reached (DI7 is True) | Close In Valve; Start Heating System | 0, 1 | #### HEATING | Condition | Action/Procedure | Logic (0, 1) | |---------------------------------------------|----------------------------------------------|--------------| | Tank is full (DI7 is True) | Start heating process | 1 | | Temperature below setpoint (AI0 < Setpoint) | Continue heating | 1 | | Temperature at or above setpoint (AI0 >= Setpoint)| Stop Heating System | 0 | #### DISCHARGING | Condition | Action/Procedure | Logic (0, 1) | |------------------------------------|-------------------------------------------|--------------| | Start discharging process | Open Out Valve (DQ1 = True) | 1 | | Low level not reached (DI6 is False)| Continue waiting for low level | 1 | | Low level reached (DI6 is True) | Close Out Valve (DQ1 = False) | 0 | ### Alarms Logic Table | Alarm | Condition | Action | Logic (0, 1) | | --- | --- | --- | --- | | A0 (Tank High) | DI7 is True | Set Active | 1 | | A1 (Tank Low) | DI5 is True | Set Active | 1 | | A2 (Temp High) | AI0 > 80 | Set Active | 1 | | A3 (Temp Low) | AI0 < 10 | Set Active | 1 | | A4 (Door Open) | DI9 is True | Set Active | 1 | | A5 (Emergency) | DI3 is True | Set Active | 1 | ### Extra features Pressure sensors could be added to the INPUT and OUTPUT valves to ensure the amount of water is the same in case of a clogged pipe

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