BASIC PROORAHMil'li SECTION 4.11
4. 11, 3
4.11.4
VER.V09F
Remember that once powered up, the RS-232 output remains active
until HUNTER is powered down or the inverter is commanded 'off'
by :
OUT 132,0
HUNTER power consumption increases substantially during RS-232
transmission with corresponding reduction in battery life,
It should be noted, however, that if the RS-232 line is powered
off further serial transmission will be lost unless the inter-
face is powered up again, by:
OUT 132,
1
NOTE: The interface will not power-up automatically with a
simple LPRINT statement with no argument.
SPEED/PROTOCOL LIMITATIONS
It is always advis.able that some form of protocol handling is
established between HUNTER and associated computers.
Some multi-access mainframes and some popular microcomputers are
unable to support any form of protocol, however.
In these cases, HUNTER will generally support direct program
transfer at speeds of 1200 baud or less, At higher speeds,
HUNTER's input buffer may overflow leading to loss or truncation
of lines, At 1200 baud, the buffer smooths the flow of incoming
program through HUNTER Basic's syntax checking routines,
Problems with truncation will invariably lead to the load
operation being aborted and a
1
SYX Error' message being dis-
played, since the Interpreter will not accept partial lines.
The capability of supporting simple 1200 baud communication is
invaluable in many situations.
CCIOOJNICATIONS wrm DATABASES
A very useful HUNTER feature is the ability to communicate
directly with mainframe databases using TERM.
This interactive mode can be used manually to establish logon
procedures, passwords, etc., before attempting to transfer or
copy files or inspect data.
Sequences proven out manually can in most cases be implemented
in HUNTER Basic as automatic features of the user's program once
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