IpCAS ipEther232 - Technical Details for ipEther232

4.6 Technical details for ipEther232
During the development we arragened our attention on the compatibility of the
“virtual” serie dard drivers. The Ethernet makes som
restrictions necessary
• There are delays
• The device has to
• The Xon / Xoff han not su ported at the moment.
Send
Between the call „Writefile” on the a of the first byte
at the interface it takes approx. 5millise ytes of the task
are issu delay. In case of sy ous write
returns app after th he interfac
For each call iteFile“ functio enters the Ethe
least. If po hould be
On data reception blocks have to be a
To do this, there are two timeouts available in 2.
1. ead Time
2. “Character Dist
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Reception of the first byte starts the "Total Read Time". After this has expired all
characters received until then are sent to the PC. This value must not fall below
the travel time of the udp packet in the Ethernet. Use the "ping" tool to determine
the travel time. The default value for this parameter is 100 ms.
Fine tuning might be required for time critical applications as well.
ll driver with the stan e minor
build blocks of Data
dshake is p
pplication and the appearance
conds. All subsequent b
ed at the interface without
rox. 5 milliseconds
nchron
e last byte appears at t
the call
e back.
rof function "Wr n one packet net at
ssible, only blocks s written.
Receiving
ssembled.
ipEther23
„Total R out“.
ance”.
3. „
o
t
Änderungen vorbehalten Stand 09.09.05
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