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am used NI OPC service to connect Siemens plc s7-1200 (tiaportal 2014) to labview i select siemens ethernet tcp/ip .but in OPC quick client ,only the tag value created by myself is UNKNOWN and the quality is bad .

am used NI OPC service to connect Siemens plc s7-1200 (tiaportal 2014) to labview i select siemens ethernet tcp/ip .but in OPC quick client ,only the tag value created by myself is UNKNOWN and the quality is bad .

‎06-09-2018 09:38 PM

am used NI OPC service to connect Siemens plc s7-1200 (tiaportal 2014) to
labview i select siemens ethernet  tcp/ip .but in OPC quick client ,only the
tag value created by myself is UNKNOWN  and the quality is bad .

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