| Answer: The transmit and receive buffers
sizes for all the Digiboards drivers and the Com port is 1600 bytes
each. You can transmit bigger packets but when this buffer becomes
full Citect will do a hard wait to put any extra characters into
the buffer. This will greatly reduce performance, so you should
limit maximum packet size to less than 1600 bytes. The buffer sizes
have been designed for a maximum packet size of 1024 bytes, so one
and a half packets can be contained in the receive buffer before an
overflow will occur. Overflows would only occur when the protocol
driver is very busy, and cannot remove the packet fast enough from
the buffer before a new packet arrives. |
