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Dear Sergei, many thanks for your reply. It is an idea..... Do you know if the MAC address of the NJ CPUs are diferents? In oder words, if I buy two NJ301 CPUs, each one will receive differents MAC Address? If yes, read the MAC instead of the serial can solve my problem! Sergei, do you have any examples using CIP message to read the MAC? Could you share somethink? Thank you so much.

Dear All, I'm trying to find a way to read the serial number or the lot number of a NJ301 CPU. The idea is read some identifier number and put in my program in order to identify whether the CPU is the original CPU. I already look and try some System Variables, but the more near was the _UnitVersion, but this number is related to thousands and thousands CPUs. Case I could read this kind of identifier, I could use some comparator and turn on some boolean to advert "No correct or original CPU". Some think like this. I thank in advance.

Hello All. I'm building a system with 5 servo motors and 2 inverters. For each inverter I have an encoder to read the real position. These encoders are read using a NX-EC0142. I can read the position without troubles, but I have to build a homing procedure also to these encoder type axis. Everything works fine, but I have to read the Z channel of the both encoders to know the exact moment that they are "on home". This is the problem! I can't found a solution to put the Z channel in a variable to be read and used in the homing routines. Had someone an ideia or had one sample program? Many thanks in advance.