Nothing close enough? Start from a blank ladder logic → Describe it in one paragraph.
How to use a ladder logic template.
- 01Define the I/O
Name the start/stop buttons, overloads, and motor contactor outputs.
- 02Build the seal-in
Describe the latch (start OR motor-running, AND NOT stop); the AI draws the seal-in rung with the holding contact.
- 03Add interlocks
Include safety interlocks (overload, e-stop) as normally-closed contacts in series.
- 04Export for the panel
Export PNG/SVG for the control panel documentation or PLC program reference.
Questions about ladder logic templates
What is a seal-in circuit?
A latching rung where the output's own contact is wired in parallel with the start button, so the motor keeps running after the momentary start button is released — until the stop button breaks the rung.
When should I use set/reset instead of a seal-in?
Set/reset (OTL/OTU) latches an output across separate rungs and survives even a program scan reorganization. It suits mode selection and state-holding; the seal-in suits simple start/stop.
How are safety interlocks shown?
As normally-closed (XIO) contacts in series on the rung, so that a tripped overload or pressed e-stop opens the rung and de-energizes the output.