
CASE STUDY · OT/IT INTEGRATION
Connecting the quarry Moving the business forward
Explore what's possibleFrom weighing to invoice
Digital delivery notes connect the site with the office. The wheel loader scale feeds weights straight into the note, customers sign on a tablet and the documents reach invoicing without being typed in again. All data stays inside the company's own network

Project facts
- Operation
- QuarryHaulage
- Scope
- Digital delivery notesScale integrationInvoicing integrationTabletHosting
- Technologies
- PFREUNDT ERP APIRZA XML and SQLAngularJavaPostgreSQLDockerVPN
- Outcome
- Paperless from weighing to invoiceData in the company's own network
Two delivery note books and a scale without a connection
Delivery notes for gravel and truck hours were written on paper, the gravel notes without a running number. The wheel loader scale was not connected, weights were read off and copied, customers and articles lived only in the invoicing software
The office entered every note a second time for the invoice. The task was to join scale, delivery note and invoicing into one continuous flow without replacing the existing systems

Scope of work
From the scale to invoicing
Digital delivery notes
Two note types for gravel and truck hours with continuous number ranges, from draft to cancellation with a complete history
Signature on the tablet
Drivers and customers sign on the device, the note goes out as a PDF by mail to the company or site foreman and prints on site
Connected wheel loader scale
New weighings are collected every few seconds and automatically create delivery note drafts with ticket, weight and time, no typing required
Master data from invoicing
Customers and articles come straight from the invoicing software, with a review step on matching, so nothing has to be maintained twice
Notes straight into the invoice
Issued delivery notes are handed over to invoicing on a schedule, while pricing and billing stay in the existing system
Running in the own network
The application runs on dedicated infrastructure, is reachable only through the company VPN and backs up its data every day
What the connection enables
PROJECT OUTCOME
No document is entered twice any more
One flow from weighing to invoice
Weight, signature and handover to invoicing work as one chain. What happens on the yard is available in the office as a document right away
Continuous and traceable documents
Every delivery note carries a running number and a history with creation, signature, dispatch and handover. Questions are settled in seconds
Existing systems stay in use
Scale and invoicing were connected, not replaced. The company keeps working with the tools it knows
Data under the company's control
The application runs inside the company network, with no multi tenant cloud platform. Access is possible only through the company VPN

