This is the number of times that the BMS has opened the primary contactor(s) when the current load exceeds the "High Current' parameter defined on the "Current Limit Faults' sub-tab of the General Fault Settings tab.
Many contactors have a manufacturer defined maximum number of times they can safely open or break current over X amps before they are considered compromised and at risk of failure. The BMS allows the operator to program in the number of permissible opens when the current is higher than the defined amperage level. This parameter represents the current counter for this value in case it needs to be read in by external equipment.