Posted 28 Feb 2020 Dear All, S7-200 smart with analog input/output module (EM AM06) is installed. Problem is that sometime, All LEDs of input section remains stable and suddenly all starts blinking. and at that time values of the sensors attached to that inputs also varies. is it problem of AM06 module or of any sensor? waiting for reply. Thanks Share this post Link to post Share on other sites
Posted 10 Mar 2020 There does not seem to be a manual on the Siemens site. What kind of manual came with it? Have the Germans given up on documentation? Share this post Link to post Share on other sites
Posted 14 Mar 2020 All the information is contained in the S7-200 Smart System manual. https://support.industry.siemens.com/cs/document/109745610/s7-200-smart-system-manual-?dti=0&lc=en-CN Possible faults are = loss of 24V DC, Overflow or undeflow ?? But checkout the manual sections C & D for diagnostic information. Share this post Link to post Share on other sites