text: <s>[INST] Power flex70 fault code F511 Summary: Fault code F511I would like to know about power flex 70 Fault code F511? For the system we use controlnet communication (20ComC) and config this port is ( 5 ). Cat no.of power flex is 20A5P0A0AYNANC0 For this code we can't reset [/INST] According to the 20-COMM-C manual, page 199 http://literature.rockwellautomation.com/idc/groups/literature/documents/um/20comm-um003_-en-p.pdf event 11 means Another peripheral with the same port number is already in use. Do you have another option card installed? \\n </s>