User`s guide

Timing Options
/Rnn
Defines the flush/retry count in 55ms intervals. This value is used in
error states for re-transmitting requests and for terminating receive
flushes when input errors occur. Normally, this option should not be
specified.
/Wnnn Includes a delay of arm> microseconds when transmitting downlink.
This parameter can be used to pace the rate at which bytes are
transmitted downlink to the SLTA-10 Adapter, and may be required
for high-performance network management tools. The delay is
executed following the transfer of each data byte to the host’s UART,
and only after the first 15 bytes have been sent.
Since the SLTA-10
Adapter employs a 16-byte deep FIFO buffer in its UART, the first
group of bytes sent do not need to be paced.
The pacing delay will
have no effect unless it is greater than the actual period it takes to
transmit a single byte at the given serial bit rate. The time taken to
transmit a byte is 173 ps at 57,600 bps, and 86 ps at 115,200 bps.
This option should be used at 115,200 bps if messages greater than 16
bytes are to be transmitted. A value of /w12 o is suggested. This
option is not required at the serial bit rate of 38,400bps or slower.
By default, the SLTA-10 MIP mode firmware disables network
communications after a reset by entering a FLUSH state. This state
causes the SLTA-10 Adapter to ignore all incoming messages and
prevents all outgoing messages, even service pin messages. The
SLTA-10 MIP mode network driver for DOS automatically enables
network communications when the SLTA-10 Adapter is opened and
when it receives an uplink message from the SLTA-10 Adapter
indicating that it has been reset. However, the host application itself
must explicitly enable network communications if the / z option is
specified and the Switch3/CFGl input is set to Network Disable (UP
position). See Chapter 4 for more information.
Host applications which need to configure the SLTA-10 Adapter prior
to enabling network communications should use this option. This
option should not be used with the LonManager API, LonManager
LonMaker Installation Tool, or the LonManager DDE Server. More
information about the niFLUSH_CANCEL message is provided in the
LONWORKS Host Application Programmer’s Guide.
Network Interface Protocol Options
/F
Enables the full interrupt mode of the driver.
If this option is not
specified, the driver will disable interrupts for the duration of each
link-layer transfer. This ensures that no data will be lost due to other
system interrupts, and is acceptable at high serial bit rates. The
driver will use interrupts for the first byte of each uplink interface
buffer. When the uplink interrupt is received, the driver reads the
rest of the message without interrupts via polled I/O. Interrupts are
disabled during the uplink transfer. This assures that no other
system interrupts will occur resulting in lost uplink data frames.
Downlink transmissions are sent directly via polled I./O of the serial
SLTA-10 Adapter User’s Guide
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