Since Siemens revises hardware (e.g., 6ES7 212-1AE40-0XB0 vs older 1BG40), your library must be versioned.
A chaotic library is worse than no library. Adopt these rules: qelectrotech siemens library
: Most standard Siemens components (PLCs, contactors, relays) are bundled with the software. You can find them under the "Official" Since Siemens revises hardware (e