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Controller tags observed in the RSLogix5000 programming environment must have the "External Access" property configured to "Read Only" or "Read/Write" for the tags to be read by the KEPServerEX Allen-Bradley ControlLogix Ethernet Driver. Please note that automatically generated tags may set External Access to "None" by default. To have KEPServerEX read controller tags, reconfigure External Access as needed in the Add-On Instruction Parameters of RSLogix.