Examine if Closed (XIC) : --| | -- Examines if the bit is in ON condition. If the bit is ON the instruction is true Examine if Open (XIO) : --|/| -- Examines if the bit is in OFF condition. If the bit is OFF the instruction is true One shot rising (OSR) : --[OSR]-- When the conditions preceding the instruction is true, makes the rung run for one program scan