A channel, not a competitor
Auto-discovery hands anyone hundreds of tags — and tag names mean nothing without
the person who knows the scaling, the interlocks, and which of three Start
bits is the real one. That person is you. LineKeeper removes the licensed-software and
travel friction from a support call; the engineering stays yours to bill.
How the call usually goes:
- The customer installs the free app; a scan finds the PLC, and on Allen-Bradley Logix the tag list loads by itself.
- You tell them which tags matter — a list of names over the phone is enough.
- They drag-and-drop the screen; you watch the values and sanity-check it live.
- Writes stay locked until their administrator unlocks the specific tags you named — confirmed and audit-logged on every value.
Your name on the configuration
The LineKeeper device — in development — lets a named person sign off the operator panels and the unlocked-tag list: "Configuration approved by …", shown to every operator. The moment anyone changes the panels or the tag list, the signature is invalidated until someone re-approves. The plant gets a maintenance-log record; you get a formal, documented role in the loop — from your desk.
In the free app today, writes are a per-tag unlock with confirmation and limit checks, and every write is journaled. Safety tags are blocked in code on the device and can never be unlocked — LineKeeper is not a safety device.
The panic weekend becomes a planned migration
With a bridge screen running, the dead panel stops being a Sunday-night favor. The replacement becomes a job you quote properly: firmware and application conversion planned, hardware ordered without overnight freight, commissioning scheduled. And nothing is wasted afterwards — the bridge stays as the machine's logging and dashboards layer, which the old panel never did anyway.
What LineKeeper is — and isn't
- Free app for iPhone and iPad (Android in closed beta): EtherNet/IP, Siemens S7 (S7-1200/1500 need PUT/GET; optimized DBs need absolute addresses) and Modbus TCP.
- Backup-HMI touchscreen device in development — EtherNet/IP, AB legacy PCCC, Modbus TCP, S7 and OPC UA. No preorders, no deposits.
- The free converter rebuilds buttons, indicators and values from a project export — graphics and alarm logic aren't carried over, and a bare .mer runtime can't be converted.
- Not a safety device, never for safety functions; not a certified replacement for an OEM machine interface.
Try it on your own bench first
It's the same app your customers get — with a built-in demo line, so you can see the whole flow before recommending it.
Get the free app → Partner with us →
Working with plants that need this? We're looking for integrator partners for pilots — tell us about your plants in the contact form.
FAQ
Does LineKeeper replace the integrator?
No — it removes the licensed-software and travel friction from a support call, not the engineering. Auto-discovery hands anyone hundreds of tags, but tag names mean nothing without the person who knows the scaling, the interlocks and which of three Start bits is real. That knowledge stays yours to bill.
Can I approve a customer's configuration remotely?
On the LineKeeper device (in development): yes — a named sign-off covers the operator panels and the unlocked-tag list, and any later change invalidates the signature automatically until someone re-approves. In the free app, writes are a per-tag unlock with confirmation and limit checks. Either way there is an audit trail of who did what.
What does it cost the customer?
Reading is free in the app. LineKeeper Pro (one-time purchase, no subscription) unlocks writing values and machine history on real controllers. The backup-HMI touchscreen device is in development (planned $1,290 one-time) — no preorders, no deposits.