Edge Buffering When the Plant Link Drops

The gateway at the site keeps recording when connectivity is lost. Readings upload in order once the link returns and are written into the history with their real times.

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Why the recording happens at the site

On many dashboards a dropped link means a frozen screen and missing readings. A later question about what a chamber was doing at half past two then has no answer. Buffering at the gateway closes that gap.

What happens at the site meanwhile

Rules keep running

Thresholds and duration rules sit on the gateway, not in the cloud. The panel hooter sounds and an interlock still fires with the internet gone.

Readings held locally

Every reading taken during the outage is stored on the gateway with the time it was taken, and not the time it reached the server.

Uploaded in order

When the link returns, stored readings go up in sequence and fill back into the history. The chart shows no break.

Offline shown as offline

A tile reading gateway offline, still recording at the site, tells the supervisor more than a stale value shown as live.

Connectivity chosen per site

Wi-Fi, wired, a 4G SIM or LoRaWAN can be used, chosen for each location.

Local rules run on the gateway whichever link is used
Commissioning includes pulling the cable out on purpose
Buffered readings land with the times they were taken
Devices that stopped reporting show the gap they left

FAQ

Frequently asked questions

How long can it hold readings at the site?

It depends on the gateway chosen and on how often each point is read. That is settled when the hardware is selected with your vendor. If the gateway loses power, nothing is recorded until it returns.

Will the times be wrong after a long outage?

No. Each reading carries the moment it was taken at the site and is written into the history at that moment. A twelve hour gap fills with twelve hours of readings.

Do alerts still reach us while the link is down?

Only the local ones. The panel hooter and lamp work without a network. WhatsApp and SMS need a connection, so they arrive after the link returns, carrying their original times.

Talk to us

Tell us what you need.

Share your requirements and one of our engineers will come back to you within one business day.

What happens after you share your requirements

A senior engineer reads your answers. Nobody phones first.
Within one business day you get a written note: what we understood, what we would start with, and the questions we still have.
If it fits, a proposal follows with the order of work, what we need from you and what you receive at each step.
No call is booked and nothing is paid until you have read the note. Your details stay with us.

Start with your requirements

Seven short steps that tell us what you need. A senior engineer reads them before anyone gets in touch.