Topic
Programming
3 guides across the knowledge base.
ReferencePLCProgramming
Ladder Logic Fundamentals
Rungs, contacts, coils, and the relay conventions the language inherited — plus the patterns you will meet in almost every industrial program.
10 min readUpdated Aug 11, 2026
ReferenceAnalogPLC
Analog Scaling: Raw Counts to Engineering Units
The arithmetic that turns an analog card reading into feet, psi, or gallons per minute — plus the range mismatches that silently corrupt it.
8 min readUpdated Jul 16, 2026
ReferencePLCProgramming
Interlocks and Permissives
A permissive lets you start. An interlock stops you. Confusing the two produces equipment that either will not run or will not protect itself.
7 min readUpdated Jun 27, 2026
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