text: <s>[INST] Powerflex 700 with 20-comm-c problem Summary: NULLHi, Rslinx can find the Powerflex 700 with 20-comm-c v2.001, but when I replace the 20-comm-c module v2.001 to a new module v3.001, the rslinx cannot find the VFD anymore, The controlnet adapter 1756-cnb display 'NET ERR'. Any suggestions? Thank you [/INST] Welcome to the Forum! I suggest to try to install the latest EDS file for your PF700, follow instructions HERE RSLinx should show the drive after the update. After that you can check your network and see if you need to align the new version in the project and, eventually, reschedule the network. - fuzzy logic In order to enhance the reputation of the Forum's contributors, please rate the replies you got and remember to close the thread clicking Choose as Best Answer button over the solving answer. Thanks ! \\n </s>