User`s manual

AWK-1121/1127 Software Installation and Configuration
4-13
However, if you can reach other network devices, it may be that the AWK-1127 is not powered on or is
disconnected. Note that Auto Network Re-Connection must be enabled in order to use this function.
Fast Flush
(only flushes the local buffer)
For some applications, the user’s program will use the Win32 “PurgeComm()” function before it reads or
writes data. After a program uses this PurgeComm() function, the OnCell driver continues to query the
OnCell’s firmware several times to make sure no data is queued in the OnCell firmware buffer, rather than
just flushing the local buffer. This design is used to satisfy some special considerations. However, it may
take more time (about several hundred milliseconds) than a native COM1 due to the additional time spent
communicating across the Ethernet. This is why PurgeComm() works significantly faster with native COM
ports on the PC than with mapped COM ports on the AWK-1127 . In order to accommodate other
applications that require a faster response time, the new OnCell driver implements a new Fast Flush option.
By default, this function is enabled.
If you have disabled Fast Flush and find that COM ports mapped to the AWK-1127 perform markedly slower
than when using a native COM port, try to verify if “PurgeComm()” functions are used in your application.
If so, try enabling the Fast Flush function and see if there is a significant improvement in performance.
Auto IP Report
: The functions applies to OnCell Series only and does not apply to the AWK-1127.
9. The Serial Parameters tab in the following figure show the default settings when the AWK-1127 is
powered on. However, the program can redefine the serial parameters to different values after the program
opens the port with Win32 API.
10. Click the Security tab to configure security settings. Select the Enable Data Encryption option to enable
data to be encrypted when transmitted over the COM ports. After selecting the encryption option, select the
Keep connection option to start encrypting COM port communications immediately without restarting the
COM ports. (If your application opens and closes COM ports frequently and the AWK-1127 is only for one
host, you can enable this option to speed up the opening/closing time. However, this will result in your host
tying up the COM port so that other hosts cannot use it.).