The PG5 compiler replaces <!--$TANK_LEVEL$--> with the live value. This is and runs on the PLC itself.
Focuses on the high-level centralized software platform based on Tridium N4 technology. It details how the software integrates controlling, monitoring, and reporting with HTML5 and modern cybersecurity standards. Source : Honeywell / Saia Burgess Controls 4. Historical Context Saia PG5 Controls Suite: Engineering & programming