ChatDiagram
Function Block Diagram · Fbd

Tank setpoint limiter + alarm (FBD) — Function Block Diagram

Two-network FBD that clamps an operator-entered tank-level setpoint to the safe range [0, 95]% via LIMIT, and raises an alarm if the operator types an out-of-range value. Uses LT and GT comparison blocks, the LIMIT selection block, and demonstrates REAL (orange) and BOOL (black) wires carrying different data types in one diagram.

Type Function Block Diagram (FBD)Standard IEC 61131-3:2013 §6.4Engine schematex-fbdUpdated 5/26/2026
Tank setpoint limiter + alarm (FBD)
Drawing preview
The request

“Create an FBD that limits a desired tank setpoint between 0 and 95 and raises an alarm when the requested value is outside that range.”

Then tryChange the maximum setpoint to 90.Add a low-level permissive input.
More like this

Other examples in this family.

Browse all function block diagram templates →