A unified approach to automation

摘要

It is common for automation engineers to suffer system compromise as a result of vendor lock in, but it doesn't have to be that way argues Jez Palmer of Schneider Electric. Automation engineers seeking to develop new automation systems tor to create better control solutions for plant and equipment can be restricted by vendor lock in - where one automation vendor's equipment is incompatible with others. Moreover, this is a long standing and common situation that relates to both hardware and software. Frequently, the need to link PLCs with inverters, HMIs or intelligent relays results in the need for serious compromises or even bespoke interfaces to be created. Unless there is a compelling technical reason for the integration, the majority of engineers would seek alternative seamlessly compatible products - typically from one manufacturer. Clearly, it can be in the interests of large automation equipment companies to perpetuate such practice, since once one item of their equipment is specified, the user can become forced to use other devices from the same maker.