S7314 with schneider tesys T

i had connected S7314-2PN/DP with schneider tesys T (MMC R EV40 ) via profibus  DPV!. I am getting enough data through SFB 52/53.

the problem is that my tesys module is tripping frequently on "network port fault (fault code 109).

the problem occurs in both local mode(push button start) and remote mode( plc start)

i have tried in every possible way but not able to resolve it.

any idea on this.

rgds,

sumit

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Split from connect s7300 to schneider tesys t via profibus.