WAGO CODESYS Modbus Fire Control
Budget: £750 – £1,500 GBP
I need a fully-functional CODESYS application for a WAGO controller (either 750-885 or 750-8001) that communicates by Modbus TCP whose sole purpose is active fire-systems control. The installation is a multi-medium system; the program must drive individual discharge valves, monitor feedbacks and handle alarms for the selected extinguishing agents:
• Water
• Gas
• Aerosol
Key points I expect you to cover
– Develop structured, well-commented CFC/ST or LD logic that starts, stops and supervises each medium, including interlocks, pre-discharge delays, abort functions and post-discharge resets.
– Build a clean Modbus register map so field devices and the MASTER panel can read status bits and write commands without clashes.
– Implement watchdogs, fault handling and fallback states that leave the plant safe if communications drop.
– Create a simple HMI page inside CODESYS WebVisu (or another lightweight option) so I can simulate and fat-finger test every sequence before we go live.
Deliverables
1. Complete CODESYS (2.3 0r 3.5) project file (.project archive) with all libraries and global constants.
2. A spreadsheet that documents every Modbus address, data type and engineering unit.
3. Step-by-step commissioning checklist plus short video or screenshots proving the logic runs in simulation.
Specify PLC &I/O configuration and program a PLC control system based on the i/O quantity below
2x PLC (750-885)
21x Digital Inputs
39x Analogue inputs (8x 4-20ma, 31x resistive)
58x Digital outputs
The PLC and I/O will be duplicated, both will feedback modbus data to the vessel master, loss of heartbeat signal will determine what PLC vessel master reads from
• Water
• Gas
• Aerosol
Key points I expect you to cover
– Develop structured, well-commented CFC/ST or LD logic that starts, stops and supervises each medium, including interlocks, pre-discharge delays, abort functions and post-discharge resets.
– Build a clean Modbus register map so field devices and the MASTER panel can read status bits and write commands without clashes.
– Implement watchdogs, fault handling and fallback states that leave the plant safe if communications drop.
– Create a simple HMI page inside CODESYS WebVisu (or another lightweight option) so I can simulate and fat-finger test every sequence before we go live.
Deliverables
1. Complete CODESYS (2.3 0r 3.5) project file (.project archive) with all libraries and global constants.
2. A spreadsheet that documents every Modbus address, data type and engineering unit.
3. Step-by-step commissioning checklist plus short video or screenshots proving the logic runs in simulation.
Specify PLC &I/O configuration and program a PLC control system based on the i/O quantity below
2x PLC (750-885)
21x Digital Inputs
39x Analogue inputs (8x 4-20ma, 31x resistive)
58x Digital outputs
The PLC and I/O will be duplicated, both will feedback modbus data to the vessel master, loss of heartbeat signal will determine what PLC vessel master reads from