In reading some literature from Rinda Technologies, It doesn't appear that Volvo incorporated the RPM history feature like Mercruiser did on the 555 and up PCM's. It seems Volvo still only uses the total engine hours found when you first power up the scan tool.
Being that it's a newer designed engine/system, maybe forum member
muc would be kind enough to offer up an updated comment towards Volvo's latest design engine/internal ECM features offered nowadays.:encouragement: