Electronics Manufacturing: Test Application

The Customer: Schneider Automation. The Customers Requirement: Integrate the functional test of DeviceNet network interface circuit boards into an existing test station. Make a final system test and load unique serial numbers into the device software.

The Design Solution:

Implemented modifications to the test station to exchange information with the device utilizing the DeviceNet network, and existing bar code system. Adapted generic CAN function libraries provided by the interface board manufacturer to work in the customers environment and database structures.

A test fixture was added to the test stand that wired inputs and outputs from the DUT to be visible I/O on the network. A program is written to exercise the I/O on the DUT and validate proper operation. Serial number information is generated from input from a bar code scanner and date system and downloaded to the module.

A program was written to prompt operators to load modules, wand the bar code reader and display test results. Diagnostic information is provided for test failures.

This customer was able to reduce the number of PC’s used in testing, by including this test in an existing station.

Major Automation Equipment

• PLC - Modicon Momentum
• Network - DeviceNet, GPIB-488
• Computers - PC Compatible
• Software - Proprietary, DOS