Opening an unfamiliar PLC program can feel overwhelming.
You may see:
Dozens of routines
Hundreds or thousands of tags
Timers and counters everywhere
Interlocks
Permissives
Fault logic
HMI commands
VFD control
Analog signals
Communication logic
Old logic that nobody remembers
Comments that may …
Read MoreCommissioning is the stage where a PLC control system moves from programmed to proven in the real machine.
A program may look correct offline and still fail during startup because commissioning …
Read MoreThroughout this PLC series, we repeatedly used an important programming concept:
Do not build your entire machine logic directly from physical I/O addresses.
Instead, create a clean separation between the real hardware …
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