Hope somebody can help with a problem I have with a leuze asi compact light beam, we have had one fail and did not have a replacement so I removed the light beam out of the asi mon software we use running on a leuze asm safety monitor connected to a Siemens step 7 300 plc asi module cp 342-2 master re taught the code sequence on the asm and all nice and happy ,we then received new light beam I addressed the beam using a leuze hand help programmer, connected it to the system reloaded the program into asm monitor with the light beam address in it but when trying to teach the code sequence it cannot find the address any ideas would be grateful .http://www.plctalk.net/qanda/images/smilies/confused.gif