Modbus

note by default, the modbus drivers monitor holding address 0 for connection status if the modbus device does not have holding address 0, then it will not show the "connected" status you will still be able to read data from the device here are the major differences for the modbus drivers driver use enron modbus docid\ e6cghojseprtzq they8s serial connection or tcp connection to a modbus device modbus ascii docid\ bianqt2soetr7o5k0j63o modbus ascii (gen1) docid 5e4ck7io7sqxbyxjq tf0 modbus ascii advanced docid alql2 zeowiai3ckcue serial connection to a device using modbus ascii modbus rtu docid\ ojdjp8zaynmi60fhonu3c modbus rtu (gen1) docid\ ibxmgs 2buexzvifhxafd modbus rtu advanced docid\ dyatkpozlr44g3sh8s783 modbus rtu offset (gen1) docid\ bssbwydz3mbevie4qothz serial connection to a device using modbus rtu the gen2 driver has an option for zero based addressing and therefore replaces both gen1 rtu drivers modbus rtu over tcp docid\ rfc9mvh12mmgs8zml6lf4 tcp connection to a modbus server which has one or more modbus rtu connections modbus tcp docid\ fdminjdckrjhg8uz0m9gf modbus tcp (gen1) docid\ lsdozmhi djpj54w bzf modbus tcp offset (gen1) docid\ mjfhhn9u1fozpi imtjln tcp connection to a modbus device the gen2 driver has an option for zero based addressing and therefore replaces both gen1 tcp drivers modbus udp docid\ pqywpntg53tblktnynulw modbus udp (gen1) docid\ w2tu0 dlwbo1d5xyryw h udp connection to a modbus device