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