Every guide, screen and free tool — one page
What the interface actually looks like, what to do when a panel dies, and the free tools that help meanwhile. Short video walkthroughs will land here as we record them — for now, every screenshot below is the real interface, unretouched.
Real screens, explained
The same interface runs on the 7″ touchscreen and in any browser on the plant network. Click any screenshot to zoom.
On the touchscreen, tab by tab
Captured on the device itself — portrait kiosk mode, the way it stands next to a machine.
The deeper tools
And the free app on your phone
The same idea in your pocket — three protocols (Allen-Bradley, Siemens S7, Modbus TCP), one network scan, dashboards and an operator panel. Full app tour →
Emergency guides
HMI panel died — the 10-minute triage
Start here. What to check before buying anything — a surprising share of "dead" panels is a $40 power supply or a burnt backlight — and how to keep producing meanwhile.
START HERE · ANY BRANDPanelView Plus 7 not working
Symptom by symptom: black screen, boot loop, communication errors — what each one tells you and the realistic fix paths.
ALLEN-BRADLEYPanelView touchscreen not responding
Display fine but touch dead, drifting or ghost-touching? How to tell calibration from a failed digitizer, and what each repair actually costs.
ALLEN-BRADLEYPanelView Plus 1000 replacement
The model is discontinued, so you're choosing a strategy, not a spare part. The four realistic paths with honest money and time.
ALLEN-BRADLEY · DECISION GUIDESiemens HMI not working
KTP and Comfort Panel symptoms decoded — and how to get eyes on the machine from a phone while you fix the panel.
SIEMENSSiemens HMI replacement options
New panel with a TIA project migration, used unit, repair — or bridge first and decide calmly. Costs and timelines without the sales gloss.
SIEMENS · DECISION GUIDEHow-to guides
Build an HMI screen without HMI software
From a free phone app to a mounted physical screen — step by step, no integrator, no licensed HMI development software.
STEP BY STEPRead CompactLogix tags without Studio 5000
Logix controllers hand over their own tag list — no L5X export, no project file, no license. See every tag live from a phone in about 15 minutes.
ALLEN-BRADLEYModbus TCP client in your pocket
Scan the subnet, name registers once with a live preview, trend values and write setpoints — from an iPhone or iPad.
MODBUS TCPUse these today
HMI project converter — free, in the browser
Upload a FactoryTalk View, View Designer, Optix, TIA Portal/WinCC or Weintek export and get a working LineKeeper screen. Runs entirely in your browser — the file never leaves your computer.
FREE TOOLUser manual
The complete illustrated manual: first setup, PLC connection, operator panel, dashboards with recipes, AI analytics, backups and troubleshooting.
DOCUMENTATIONThe free mobile app
Allen-Bradley, Siemens S7 and Modbus TCP on iPhone and iPad — with the patent-pending "Find by action" tag discovery. Free download, Android beta open.
iOS · ANDROID BETAGuías en español
¿El panel HMI no funciona?
Diagnóstico en 10 minutos y cómo no parar la línea.
ESEl PanelView no enciende
Síntomas, causas y qué hacer mientras tanto.
ES¿El panel Siemens no funciona?
KTP y Comfort Panel: qué dice cada síntoma.
ESCliente Modbus TCP
Escanear, nombrar registros y graficar desde el celular.
ESTags de CompactLogix sin Studio 5000
La lista de tags llega sola, directo del controlador.
ESA dead panel is survivable
LineKeeper is a plug-in 7″ industrial touchscreen that stands in for a dead HMI in minutes and stays useful afterwards — diagnostics, logging, dashboards. One-time price, no licenses.