| For DNP devices that have small data link
layer frames, then for the same size application layer buffer, more
data link layer frames will be produced. The library that the
DNP driver utilises was previously assuming that the DNP device
would have a maximum data link layer frame size of 292 bytes, and
an application layer fragment maximum size of 2048 bytes.
This combination would result in a maximum of 9 frames per
fragment. The library has been modified such that it will
allow up to 64 frames per fragment, however the main practical
restriction introduced is that the resulting application layer data
from the combined frames will not overflow the application layer
buffer. Now DNP devices with maximum data link layer frame
size of less than 292 bytes are also supported.
Similarly, the INI parameter "[DNP] DataLinkFrameSize" allows
the specification of the Max data link layer transmit frame size.
The default value is 292 bytes. The parameter value is upper
limited to 292 bytes, and lower limited to 28 bytes.
This INI parameter is available in version 1.04.00 of the driver
(or later).
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