Table of Contents
Advertisement
SECTION
4.
EXTERNAL STORAGE PERIPHERALS
Only one of
the options 1x,2x, or 30 may be
used in a program.
lf using a SM64 Storage
Module, output code
21 should be
used.
Use of
the
SM1
92n16
is
discussed
further
in
Section
4.4, prinl output formats are
discussed
in
Section 4.5.
Section 4.3
contains specifics
on
the cassette
recorder. Note that tape operation
is
for above
f
reezing
temperatu res
only.
4.1.2',4
MODE
The *4 Mode may
be used in place of Instruction
96
to enable or disable printer and/or cassette
tape output and to set
the printer baud
rate. The
first parameter
is a
two
digit number determining
the tape and printer
status.
The second
is
the
baud
rate
code.
To enter a different status, key
in
the appropriate code from Table 4.1-2,
followed by
"A". Printer
data
is sent in the
printable ASCllformat only (Section 4.5).
lf
tape
or printer status
is
changed during
execution of
the program tables, execution stops
until
the programs are recompiled. Instruction
96 should be used
to send data to the
SM192/716
Storage
Modules.
Do not use
*4
if
Instruction 96 is used
in
the program.
TABLE
4.1-2. *4 Mode Parameters and
Codes
Display
Key ID:DATA
Description
4.2
MANUALLY INITIATED DATA
OUTPUT.
*8 AND *9 MODES
Data may
be
transferred to
tape using the
*8
Mode and to printer or Storage Module using
*9
Mode. These
Modes allow
the user to
retrieve a
specific block of data, on demand,
regardless of whether or not the
21X
is
programmed for on-line data output.
lf external
storage peripherals (cassette,
Storage Module, etc.) are not left on-line, the
maximum allowable
time between visiting the
site
to retrieve data must be calculated to
that data placed
in Final Storage are not written
over before they are
collected.
In
order
to
this
calculation, users must
determine:
(1)
the
size of Final Storage,
(2)
the number of output
arrays being generated,
(3)
the number of low
and/or high resolution data points included
in
each output array, and
(4)
the rate
at
which
output arrays are
stored in Final Storage.
calculating
the number of data points per output
array, remember
to add
1
overhead data point
(2
bytes) per array for the output
array lD.
For example, assume
that 19,296 locations are
assigned
to Final Storage (.A Mode), and that
1
output array, containing the
Array lD (1 memory
location),
9low
resolution data points
(9
locations) and
5 high resolution data points
(10
memory locations)
is
stored
each
hour.
In
addition, an output array with the
Array lD and
5
high resolution data
points (11 memory
locations) is stored
daily. This
is a
total of
491
memory locations per
day
((2O
x24) +'11).
'19,296
divided by 491
=
39.3
days.
Therefore,
the 21X
would have to
be
visited every 39 days
to retrieve data, because write-over would begin
in
the 40th day.
4.2.1
MANUAL TAPE
DUMP *8
MODE
lf on-line tape
storage
is
enabled, entering the
*
Mode
will suspend
it.
lf left in the
*8 Mode, on-
line storage
will be re-enabled if no key entries
are made for 3.4
minutes.
Setting
up
the tape
recorder
is
discussed in Section 4.3.4.
*4
04:00
A
01:XX
A
02:XX
Output Enable Codes
Code
Description
Output Enable Code
(e.9., "10" means tape
enabled, printer disabled)
Baud Rate Code
XO
X1
OX
1X
printer disabled
printer enabled, ASCII
tape disabled
tape enabled
Baud Rate Codes
Code
Baud Rate
00
300
01
02
03
1200
9600
76,800
4-2
Advertisement
Table of Contents
