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\ mxcjpssmwqrmmhraisb w serial connection or tcp connection to a modbus device modbus ascii docid\ pfw8q5yzntcw3tyaoqiiu modbus ascii (gen1) docid\ omcpy2tyruyykul4xlnzo modbus ascii advanced docid\ w0f2c6h3yac5jchgsz8kg serial connection to a device using modbus ascii modbus rtu docid\ ejn9ghvqgligjb tn5js modbus rtu (gen1) docid\ kgot7pqngxlfglsngaf6q modbus rtu advanced docid\ nmbfnzilmhx8zvcqpbath modbus rtu offset (gen1) docid\ rvswonyuyzfviiqwk6ase 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\ umupt r8ig73l3a30m7ch tcp connection to a modbus server which has one or more modbus rtu connections modbus tcp docid\ llunauzmv554cx05mmeay modbus tcp (gen1) docid\ syenblon2ymtgu7whpje modbus tcp offset (gen1) docid\ zmj9kujhhdx74cgbdwroj 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\ hpuxi pa0ig kxuoc0da modbus udp (gen1) docid\ x g6ihp6nbbk72athht8x udp connection to a modbus device