Realtime Process Simulation of Plant Water Supply Unit
Simulation Generates logically correct Modbus signals of Water Supply facility using ESP32 MCU board with ModbusTCP interface
Simulation intended for HMI and DCS testing with realtime values and for ICS security research
Developed using Arduino IDE for ESP32 (ESP 32 MCU board is available on Aliexpress for approx price of 5$)
- Added HMI project backup for output visualisation
- V0.2 Introduced Pump AUTO functionality, adjustable setpoints, tank_drain variable on modbus
- V0.1 Initial code with manual controls only
HMI_Project folder contains latest backup of Ignition HMI Project, restore it to you Ignition setup for below result.
Current HMI Example is designed on Ignition SCADA by Inductive Automation
Free trial versions of HMI software like RapidSCADA, Ignition and Advantech is available on internet.
For simple Modbus values reading/writing you could use RMMS tool http://en.radzio.dxp.pl/modbus-master-simulator/
!Important!: Modbus library uses 0 based adressing
- Modbus Coils Offsets (read\write)
mot_start, address: 100, boolean, Start button, 1 to activate, returns to 0 after activation
mot_stop, address: 110, boolean, Stop button, 1 to activate, returns to 0 after activation
valve_state, address: 120, boolean 0-Closed 1-Open (Controlled by start/stop logic)
mat_auto, address:130, boolean, 1-Pump automatic mode(by setpoints), 0 - manual mode- Modbus input status (Discrete Inputs) Offsets(read only)
mot_run, address: 100, boolean, 1 running, 0 stop
mot_trip, address: 110, boolean, Motor trip state, cause: Tank full, Valve closed, Random trip (1 of 10000)- Modbus Input Register Offsets (read only)
mot_load, address: 100; Uint16, range:0-100, random motor load simulation
flowm_flow, address: 110, Uint16, range:0-10, flow value depending on mot_load
tank_level, address: 120, Uint16, range:0-65000, 65000 value trips the motor, has constant (random of 4) drainage flow
tank_drain, address: 130; Uint16, Random drain by process- Modbus Holding Register Offsets (read\write)
tank_Hi, address: 100; Uint16, adjustable Hi level setpoint, for turning motor OFF in AUTO mode
tank_Lo, address: 110; Uint16, adjustable Lo level setpoint, for turning motor ON in AUTO modeFollow author on twitter for project updates https://twitter.com/supeyev/
- Based on Alexander Emelianov (a.m.emelianov@gmail.com) Modbus library https://github.com/emelianov/modbus-esp8266 @emelianov
- Inductive Automation's Ignition SCADA used for HMI Design https://inductiveautomation.com/ignition/