PDM unable to connect to flow meter

Hello all,

I'm new on PDM software, i found one exist project using it but it have a small echo,

all flow meter we get reading (flow,totalizer) except one flow meter we can read only tantalizer value,

this is inside (simatic manger), but i want to trace this issue i run the PDM i see the configuration exist but the devise i need i cant connect on it throw pdm always i got this error

please check the photos in the attachments, 

i need help i dont know where is the issue could be, give me some steps to trace the error and solve it,

regards,