LINKUP 5294 WITH DL5294 FIRMWARE
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The virtual device addressing concept also enables the LinkUp to support its Auxiliary Printer facility.
Once the appropriate configurations are made in the LinkUp, a terminal connected to an asynchronous
port can sign on to the LinkUp (at Connect Mode), specify an LU associated with an auxiliary printer
LU, and have both devices supported on that single port. See Figure 3-3 for a diagram of this feature.
Figure 3-3. Dual LU to Single Physical Port Coupling.
3.4 User-Friendly Facilities
The LinkUp is designed to be user-friendly. You should have very little, if any, difficulty operating it.
Here are some of the facilities that make the LinkUp 5294 easier to operate:
• A Menu-Driven Configurator Mode, enabling you to define a variety of operational parameters
by menu selections. These define the operating characteristics of the LinkUp’s synchronous
and asynchronous ports, logical units, and attached devices.
• Help Messages are available at each of the LinkUp operating mode menu prompts (including
Connect, Configurator, and Setup) whenever you type a <?> in response to the prompt.
• Non-volatile Electrically Erasable PROM (EEPROM) storage of every parameter value you define in
Configurator Mode. This enables the LinkUp to retain your configured values even when its power
is turned off.
• Password protection for Configurator Mode, preventing anyone from accessing it and redefining the
LinkUp parameter values unless authorized with the correct password.
• Operating and Channel Status Indicators on the front panel of the LinkUp unit. These let you
monitor your unit’s overall system health and the crucial RS-232C line signals for any port.
• Self-testing performed continuously in the background throughout daily operations. This assures you
that the LinkUp is effectively executing its operating programs.
• Automatic baud detection lets the LinkUp automatically detect the incoming baud (or bit) rate of
the device you have attached to its asynchronous port.
• An Inactivity Time Limit can be set in Configurator Mode. This enables you to define a maximum
amount of time for the LinkUp to maintain the coupling between your terminal, while it is inactive,
and its associated LU session.
• A Reconnect Time Limit can also be set in Configurator Mode. This time limit enables the LinkUp to
maintain the coupling between a disconnected terminal and its associated LU session. It lets you
reconnect and pick up from where the session was interrupted.
• Two-level password protection can be defined for each LinkUp LU whenever you define a Connect
Mode password in Configurator Mode. The first level allows the LinkUp to restrict access to an LU
from everyone except the one authorized with the correct password. The second one limits access to
an interrupted LU session from everyone except the one who initially established the session.
ASCII TERMINAL
PC, etc
IBM SYS/36
ASCII PRINTER
DATALYNX/5294
EIA RS-232C
INTERFACE
AUXILIARY
PORT
EIA RS-232C
INTERFACE
(DSPLY)
LU6
LU 15
PORT n
(AUX)
LinkUp 5294