Use mAP2nd to access video networks via WLAN

Hi Everyone

This is my first post, so hello to all and thanks for your help in advance!
I’m an engineer for video surveillance cameras and networks and I’m planning to use mAP2nd’s to access our video networks wirelessly. As LAN ports are hard to find in the field, where our cameras are located, my plan is to connect a mAP2nd in series to one of the cameras. This works fine with the POE in and POE out feature of the mAP2nd. I want to connect to all other cameras and of course, the one where the mAp2nd is connected to. It works with all the other cameras but I cannot connect to the one behind the mAP (connected to ether2).

Can you please tell me how to configure the mAP2nd to connect to the camera on ether2 as well.

Some additional information:
Our networks are usually not connected to the internet.
Usually we work with just one subnet.

Thanks
Marky

Anyone?