CHAPTER 7: Operation
39
7.1.4 P
ERSONAL
C
OMPUTERS AND
T
ERMINAL
E
MULATION
S
OFTWARE
In order for the LinkUp 5294 to operate with a personal computer or word processor, a terminal-
emulation software package must be installed on the PC or word processor and must be compatible with
one of the Terminal Module IDs provided by the LinkUp 5294. See
Appendix D
of this manual for a list
of those personal computers and word processors currently supported, as well as suggested terminal-
emulation software packages.
7.1.5 ASCII P
RINTER
When using an ASCII printer, be sure to confirm that its switch-selected parameters match those
configured in the LinkUp 5294. For example, the RS-232C line signals for physical flow control
(equivalent to the printer’s Not Busy signal) and device ready (the printer’s Off-line signal) or the
printer’s logical flow control code.
7.1.6 M
ODEMS
When you are remotely located from the LinkUp 5294, you must communicate with the LinkUp 5294
over switched or dedicated lines in full -duplex mode with asynchronous modems. When a switched line
is used, be sure to confirm that the modems are optioned as follows:
• The modem automatically answers an incoming call
• The DCD line state must not be held artificially high
• The modem should hang up when DTR drops
• The modem (attached to the LinkUp 5294) must not echo commands or characters.
When the LinkUp 5294 is remotely located from your System/3X host, it must communicate with your
host over switched or dedicated lines in half- or full-duplex mode with synchronous modems. To assure
that this remote connection is operating optimally, be sure to confirm that your modems are optioned as
follows:
• The modem provides clocking (internal)
• The modem allows the LinkUp 5294 to control CD by RTS
7.1.7 P
ACKET
N
ETWORK
T
ERMINAL
N
ODE
The LinkUp 5294 can be configured to operate in an asynchronous data packet network in one of two
generic ways:
• The LinkUp 5294 recognizes that the terminal PAD echoes all hex values, which means the PAD
performs all cursor-positioning functions.
• The LinkUp 5294 recognizes that the terminal PAD echoes only certain hex values.
In the second situation, the PAD (or terminal node) might be set up to echo only displayable characters:
those including hexadecimal values 20 to 7E. When a PAD is set up in this way, the LinkUp 5294 is not
able to suppress your input to a non-display field, such as during a password entry. This means that your
input will display even though it should not.
Another PAD option might include setting it to echo some of the ASCII control codes within the range
of 00 through 1F hex as well. This setting combined with one or both of the following PAD options
would give the LinkUp 5294 limited control over the terminal’s cursor positioning.
