DIRECT_ADDRESS_USED

Severity: info by default; warn under the PLCopen preset. PLCopen: N1 / CP1 — access I/O and memory by symbolic name, not by physical address.

A direct (physical) address — %I0.0, %Q1.2, %MW100, %QX0.7, etc. — is referenced in code instead of a named symbol mapped to that address. Direct addresses break portability between target controllers, hide intent from readers, and make remapping I/O at integration time invasive.

Settings. No check-specific config.

Trigger.

bResult := %I0.0;                 (* fires *)
%Q0.1 := bResult;                 (* fires *)

The bot posts.

🟦 info  DIRECT_ADDRESS_USED
Direct address %I0.0 used (PLCopen N1 / CP1)

Fix. Declare a named global mapped to the address (xStartButton AT %IX0.0 : BOOL;) and reference the name.