Automotive Field:
One of the "big three" automotive manufacturers began having communication problems with their Modbus Plus network. This particular plant has a unique Modbus plus system in that it has over six hundred nodes. This is one of the, if not the, largest Modbus Plus network in the world. Also unique to the system, Bob Culley assisted in its' initial design and installation while working for Modicon.
The customer first called their local distributor and asked them to call the factory to dispatch a field service engineer to troubleshoot and repair their network. The distributor contacted Delta Automation Inc. They responded with two experienced field engineers and all of the proper and necessary test equipment to the site immediately. After discussing the network problems with the automotive engineers, Delta Automation, Inc. began its testing and troubleshooting. The fault was located in an extremely short time, and was determined to be a revision compatibility problem with the Modbus Plus repeaters. The units were updated and the system was online in minutes, after being down for two days. This is just an example of how Delta Automation's experience and superior knowledge was able to assist. Most certainly no other third party service company would have been as swift to respond and locate the fault.