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Hi, First time posting on here, but been a reader for a while. I have an issue with a Mitsubishi setup and I really need to resolve this ASAP. The system is based around a hot standby CPU (Q12PRH) on 6 slot backplates with a CC Link (QJ61BT11N) and Modbus (QJ71MB91). Connected to these racks is an ST Lite CC Link head station (STL-BT1) with 10 output cards (DO8) and 14 input cards (DI8). The CC Link has been set up in GX Works 2 and I don't have any ERR lights. What I do have, and don't want, is a flashing I/O LED on the ST Lite head which I have been reliably informed means the device hasn't been initialised. I have tried to do this using the X78, X79, Y78 and Y79 commands as the ST Lite head is set to occupy 4 slots, device ID is set to 1. Due to the Q CPU being a hot standby GXW 2 will not let me specify the start IO numbers, which would typically be x1000, y1000 based on their examples. I have therefore assumed it is starting at X0 and Y0, hence the X78, X79, Y78 and Y79 bits for setting the station. I have also tried using X1078, X1079, Y1078 and Y1079 as in the examples assuming it had auto addressed the start at 1000 and not 0000. Any help will be appreciated, Cheers.