ABSTRACT
AlthoughinitiallyaproprietaryprotocolcontrolledonlybyModicon,itissince2004controlledby acommunityofusersandsuppliersofautomationequipment,knownasModbus-IDA.¥isnonpro¦t organizationoverseestheevolutionoftheprotocolandseekstodriveitsadoptionbycontinuingto openlydistributetheprotocolspeci¦cations[1-4]andprovidinganinfrastructurefordevicecompatibility certi¦cation.
