Start with the application and an existing controller reference, if available. Include the measurement function, installation format and required display or control behavior.
List the power supply, signal outputs, communication interface and connected sensors. Include panel dimensions or a drawing where installation space is fixed.
Describe the requested customization separately from the standard product. Include quantity, documentation requirements and the proposed sample-review steps so that the scope can be agreed in writing.
Information to include
- Application and reference products
- Functions and interface requirements
- Quantity, documentation and approval process