User`s manual

OnCell G3111/G3151/G3211/G3251 Series User’s Manual Software Installation/Configuration
13-13
8. Click the Advanced Setting tab to modify Tx Mode, FIFO, Fast Flush, and other parameters.
Tx Mode
Hi-Performance is the default for Tx mode. After the driver sends data to the OnCell
G3111/G3151/G3211/G3251, the driver immediately issues a “Tx Empty” response to the
program. Under Classical mode, the driver will not send the “Tx Empty” response until after
confirmation is received from the OnCell G3111/G3151/G3211/G3251’s serial port. This causes
lower throughput. Classical mode is recommended if you want to ensure that all data is sent out
before further processing.
FIFO
If FIFO is Disabled, the OnCell G3111/G3151/G3211/G3251 will transmit one byte each time the
Tx FIFO becomes empty, and an Rx interrupt will be generated for each incoming byte. This will
result in a faster response and lower throughput.
Network Timeout
You can use this option to prevent blocking if the target OnCell is unavailable.
Auto Network Re-Connection
With this option enabled, the driver will repeatedly attempt to re-establish the TCP connection if
the OnCell G3111/G3151/G3211/G3251 does not respond to background “check alive” packets.
Return error if network is unavailable
If this option is disabled, the driver will not return any error even when a connection cannot be
established to the OnCell G3111/G3151/G3211/G3251. With this option enabled, calling the
Win32 Comm function will result in the error return code
“STATUS_NETWORK_UNREACHABLE” when a connection cannot be established to the
OnCell G3111/G3151/G3211/G3251. This usually means that your host’s network connection is
down, perhaps due to a cable being disconnected. However, if you can reach other network
devices, it may be that the OnCell G3111/G3151/G3211/G3251 is not powered on or is
disconnected. Note that Auto Network Re-Connection must be enabled in order to use this
function.