[?]: connecting a CPU315-2 PN/DP to GE Fanuc QuickPanel.

[X Rider]

Dear all,
I' m having a problem with connecting a CPU 315-2 PN/DP with a GE Fanuc QuickPanel IC754VSI 12CTD-KJ via ethernet.
My programing device could communicate with both equipments but the 2 equipments could not see each other.
All of the object on the QuickPanel screen have got question marks.
I' v searched from Proficy ME help, there is something about Fetch and Write I have to set in the PLC.
Could anyone please tell me what I have to do to make the 2 things see each other? Thank you.
X Rider.