What changed between versions
Two exports of the same project, in a single request. Neither file is stored: the comparison happens in memory and leaves with the response.
This is a demo on a synthetic pair
The files are made up, the story isn't: version two fixed an out-of-bounds array access, dropped a stray statement — and introduced a division by a variable that is always zero. The score went up in the process.
Order taken from the modification date inside the exports: 2026-01-15 → 2026-06-02.
⚠ The score didn't get worse, yet there are new findings. That is exactly what a score hides: comparing scores alone, you'd miss the regression.
New findings
high
div-by-zeroPLC_PRG
Gone
high
array-boundsustavki
low
double-semicolonPLC_PRG
Program blocks
added: +tees
changed: PLC_PRGustavki
Interfaces changed
PLC_PRG
a changed signature breaks whoever calls the block
Setpoints and constants
ustavki:
was 5, 60.0
now 3, 55.0
Compare your own versions (Pro) →
The comparison is structural: findings, POU list, interfaces, setpoints, tasks and device addresses. We don't do a line-by-line text diff of the bodies — it drowns in reordering, and any editor already does it.