I have 1 siemens PLC, 1500 brand, it have the opc-ua inside, it is in the same IP with Server , as the upside picture i have success connect to it .
but in the real production line, the PLC IP is 172.16.127.2, i need use a NATR to switch it to the same ip as the ignition server,
this is when i configure the
most of the case it will shows
but sometimes the step4 can show as the following picture
it will failed at step6
but i use kepware to read
it can browse the tags by means of OPC-UA
TAG READ IS OK
My question is , if the kepware is ok , that means the plc and network should be ok , but why ignition failed, how to set ignition successfully read the opc-ua tags?









