Hey There. We have a Hamai 6VA CNC using a Fanuc series O-M. A few months ago we had some issues and changed out a board in the control panel. Upon doing so, we lost all the machine Parameters. Luckily we had a hard copy of parameters and re-entered all said parameters, (PARAM, and DGNOS) as well as 900 Parameter for tool change program. The Machine is up and running with no issues entering programs, tool offsets or dnc to and from computer. My issue comes in when trying to view which tool is in which pot on the parameter list. Prior to the chip failing it used to display which tool number was in which pot in parameters 430-454 (24 tool changer) in no set order. We came up with a system where we write with a paint pen on the base of the the actual tool holder the tool # number so you can visually look up and see which tool you wanted. Considering the tool numbers and pot numbers never matched sometimes i would have to click into parameters and say i was looking to figure out which tool was in pot 2 i would look into parameter 432 and it would display a 2 digit number which was the actual tool # which was 0-24 that was sitting in pot #2. Since changing the card there are no parameters between 399-500, and in DGNOS it has the 400's but they are all 8 digit numbers with only 0's&1's within the sequence. Ive got the actual manual from the machine and the steps it suggests doesnt allow me to get into the 400s or the 400s are not present? The Fanuc Manual parameter section skips the 400s completly so it was no help. If anyone has experienced this or has any suggestions on what might be causing this or what parameters to look into i would appreciate your input.