Dear sir,

   As per last mail, you got any remedies for above problem.Please give me solution 

Hello,

The error seems to tell that:
- either, at the MB_server side, you try to read or write a register, but the data buffer pointed by MB_HOLD_REG is not defined large enough at the server side.
Be aware that a register takes 2 bytes and that the buffer length in bytes must be 2*highest register long. And by default also, the buffer starts at regsiter 0. You can change the offset by changing the value HR_Start_Offset in the instance DB of the MB_server.

- or the MB_DATA_PTR at the client side points to a buffer that is not large enough.

Hello Adfulty,

if you expect help you should tell us more about your issue. What do you want to achieve? Which communication protocol are you using? Which devices are you using? Which error did you get? What did you try so far? Can you show us a screenshot?

You need help, so please make more efforts for it.