Hi DGE,
if I understood correctly then your goal is to have a large installation where you think you might need more than 30 anchors.
PANS is fully scalable but a certain rules of deployment need to be applied. The 30 anchors limit is not per Initiator. A network can have one Initiator and tens or hundreds of anchors.
A very simplified explanation of the 30 anchors limit can be: each anchor requires a certain air-time reserved to advertise some network information. There are 30 of those air-time in the PANS design. If you put 40 anchors in one area where their signal would influence each other, then only 30 would get the air-time allocated. The rest need to wait until some air-time would be released. If the 40 anchors are spread across the area of interest, then the system will work and the resources can be reused.
As the tag passes across the network, the handover mechanism will function in the way which would allow the tag to locate and transmit the uplink/downlink data seamlessly.
I hope this would help.
Cheers,
TDK