Vijeo citect V7.0 R3 / OFS V3.31 Patch A

Hi Citect Experts,

i hope that all of you are Ok.

i need support from you.

i am running Vijeo citect V7.0 R3  with OFS V3.31 Patch A

the OFS client test is communicating with the device.

but while running the Vijeo citect V7.0 R3, the communication between Vijeo citect  and OFS is interrupted (its connected for 1 second and disconnected for 1 second)

any advises, any supports.

thanks.