Shimonev

Thank you :) I will try this tomorrow....

WOW Thank you very much for the detailed expline. Now I check in the PLC program and I see there only reference to card in address head H1 (I have only one card in the PLC). So i assume that is my head address for the card. Now I need to write a new code line to the PLC cpu, beacuse I new with the mitubushi plc did I can rewrite only the main program without rewrite the device program memory? I afride to make any damage to the machine.

Hello My name is Shimon and I`m a electrical engineer. I have the roll forming machine with Mitsubishi A1SHCPU PLC with A1SD70 moudle that connect to MR-J2S-700A servo motor driver. Today I have an issue with the servo motor, the motor don`t move not manualy and not in auto mode. I check the motor winding and they fine, the driver don`t present any alarm. But on the A1SD70 moudle I see that ERR.1 LED is on. if I reset the PLC the led go off but when I try to start the motor the alarm shows agian. I found in the internt a manual for this A1SD70 moudle Link to the manual On page 119 the manual says that I need to check in addresses 104&105 the alarm code. Now I want to ask how I can see the data in those addresses. I read the memory from the PLC using MELSOFT software and I see in device memory window the registers D104&D105 are 0. Did I check the correct registers?? or I need to look some other place for addresses 104&105? Thank you in advance for any help