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\ r99poqqkbwgn1fkmv1iag serial connection or tcp connection to a modbus device modbus ascii docid\ rtdez7mczlijm1 balxhv modbus ascii (gen1) docid\ bdoxpyzru 5scjzuzzvaq modbus ascii advanced docid\ wx931y ovy2plprjw44hs serial connection to a device using modbus ascii modbus rtu docid\ scvx7afta0d9jarxknujq modbus rtu (gen1) docid\ r7nyakwnugw8q2ozx4gar modbus rtu advanced docid\ cx0v3bamkvxzj9np1yna5 modbus rtu offset (gen1) docid\ ty9l9tvd mweavklgilq9 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\ pmzrhayqlnmhohqlvv1z1 tcp connection to a modbus server which has one or more modbus rtu connections modbus tcp docid 1fsdx47cxlqequ is igo modbus tcp (gen1) docid\ jcfrtllyqiilauwz2mky2 modbus tcp offset (gen1) docid\ bk1870a22cq8qyfahghf0 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\ whp3ycgwtcpckbr0sbdos modbus udp (gen1) docid\ qgnbkfypowpmywkc5posz udp connection to a modbus device