The S7-400 sits behind many of the UK's larger and more complex control systems. Process plants, utilities, chemical sites and big production lines all rely on its processing power and capacity.

Big systems carry big consequences. A badly planned change on an S7-400 can affect a whole plant. Bubble Automation's engineers approach S7-400 work carefully, with proper backups, clear change control and thorough testing before anything goes live.

We program and modify S7-400 systems in Step 7 and TIA Portal, covering everything from adding new process areas and interlocks to changing batch sequences and control loops. Our engineers work in Ladder, FBD, STL and SCL, so complex maths and data handling are no problem.

We also carry out fault finding on S7-400 systems, including network and hardware diagnostics, and can review existing code to highlight risks and improvement opportunities. If you are inheriting an S7-400 system with little documentation, we can help you unde

Bubble Automation is based in Droxford, Hampshire and works across the UK. Get in touch to talk through your system with an engineer who knows Siemens inside out.