Marshalling cabinet drawings from structured terminal data

Marshalling cabinets and field junction boxes are not identical, but both often need the same core task: document how cables and cores land on terminals, where those terminals are physically located and what the other end of each connection represents.

Record the panel-side information

A core number by itself is rarely enough. Junction Box Designer lets an incoming core carry a function/type, panel or terminal reference and description. That means a row can communicate something useful such as Analog Input, Slot 8/2 and Temp Bag A Low while still retaining the cable/core identity.

Use multiple terminal rails

Cabinets often contain more than one physical DIN rail. Add Rail 1, Rail 2 or additional rails as required, rename them to X1, X2, TB1 or another site convention, and assign individual terminals to the correct rail. The diagram then separates the rails instead of turning the whole cabinet into one long terminal list.

Keep local and through connections together

Not every incoming core has to continue to an outgoing field cable. Cores used for local/internal cabinet functions can remain valid terminal rows with their function, reference and description even when there is no outgoing cable assigned.

Print a drawing and schedule from the same project

The diagram provides the visual relationship between source, terminals and outgoing devices. The terminal schedule presents the same information in a compact table for checking, installation and handover. A separate site sheet adds Field, JB, Panel and Final/Loop Test sign-off columns for commissioning work.

The tool does not replace project design standards or verification. Check the generated documentation against the real cabinet and the applicable engineering requirements.