The argument for static rather than dynamic IP addresses does not appear to be as clear cut as some have suggested. I have had advice both ways from people who know a lot more about the ins and outs of networking than amateurs like me.
My dealer suggests that any static IP address should be set high to get it out of the region where dynamic addresses are allocated. To do this requires entering the dangerous territory on the device manager on the C10/15 where Meridian warn that unless you know what you are doing (and many, like me, do not) you can cause erratic performance or data loss.
So I've adopted a "half way" measure and set the IP addresses as static via configuration on the router. The three TwinStores and MS600 have been set at 10.0.0.x where x = 14, 15, 16 & 17 respectively. That sort of gets them above the lower values for x which are dynamically assigned so hopefully avoids conflict. I also eliminated a lot of devices the router had listed, that were not in common use.
A steep learning curve!
Further comment/advice anyone?
John