“…There were about 1600 chromel-alumel thermocouples for baking of VV, about 200 stress sensors for main structures and about 1700 digital inputs for apparatus in 1985. The operating methods were modified on the basis of the operating experience when JT-60 modified to be JT-60U in 1991 [4]. At present, number of input data reduced to be about 570 analog inputs and about 900 digital inputs.…”