Software tackles the jitters

Electronic commands passed from machine to machine over data networks increasingly drive today’s precisely timed and sequenced manufacturing production lines.

However timing irregularities in the signals from even one machine - a difference of only a tenth of a second from the expected - can result in havoc for manufacturing processes on the plant floor.

The timing glitches, called 'cyclic jitters', can cause real jitters, making production machines jump or shake, damaging products, even shutting down assembly lines.

Now, US National Institute of Standards and Technology (NIST) engineers have created a software program to help avoid that problem.

The NIST 'EtherNet/Industrial Protocol (IP) Performance Test Tool' enables manufacturers to anticipate how certain machines will perform as part of their data communication system. Data from the tool also can provide vendors with information need to better tune the performance of their equipment.

The EtherNet/IP Performance Test Tool collects device information from the user, generates a set of test scripts based on that information, analyses the performance data and reports the results to the user. The software package provides device transmission data for three different conditions: with no background electronic traffic, with small background traffic and with more than 240 devices on the network.