User`s guide

4-4
Network Disable (Switch3 / CFG 7)
Figure 4.4 SLTA-10 Adapter Network Switch 3 / CFGl
Switch 3 / CFGl enables (down position) or disables (up position) network
communications after reset. If disabled, the SLTA-10 Adapter will not be able to
communicate on the network after a reset until it receives an ~~FLUSH-CANCEL
command from the host.
The SLTA-10 Adapter prevents network communications by entering a FLUSH state.
This state causes the SLTA-10 Adapter to ignore all incoming network messages and
prevents all outgoing network messages, even service pin messages. In the disabled
state, if the service pin is pressed the service LED will light but no service message
will be sent. This FLUSH state is provided to prevent any other network management
tools from performing network management functions on the SLTA-10 Adapter
before the SLTA-10 Adapter’s host has a chance to perform any of its own network
management functions. This state is canceled with the niFLUSH_CANCEL command
from the host.
An SLTA-10 Adapter network driver may automatically enable network
communications when the SLTA-10 Adapter is opened. For example, by default, the
DOS network driver enables network communications by automatically sending the
niFLUSH_CANCEL command 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. If the host application needs to configure the SLTA-10 Adapter before enabling
network communications, the / z option on the DOS network driver command line
must be used to leave network communications disabled after the SLTA-10 Adapter
is opened. When the / z option is specified and CFGl is set to Network Disable On,
the host application itself must explicitly send the niFLUSH_CANCEL command after
reset.
The Windows 95198 or NT network drivers do not provide a / z option. When using
these network drivers, network communication will proceed without any action by
the host application if Switch3KFGl is in the Network Enable position.
Otherwise, if
Switch3/CFGl is in the Network Disable On position, the host application must
explicitly send the niFlush_CANCEL command.
Configuration