Service manual
6. CONNECTION OF PERIPHERAL
DEVICES
1.
PERIPHERAL DEVICES
THAT
CAN
BE
CONNECTED.
General low-speed peripheral devices (e.g., measuring
in-
struments,
printers,
X-V
plotters, etc.) having parallel inter-
faces can be
connected.
The
Model-3500 Series Business
Computer
Main Unit can also be
connected
to
another
computer
having a parallel interface.
Processing
of
control
signals and
operation
(timing)
of
the
automatic
handshaking modes differ for each device and
the
specifications
of
each device must be satisfied.
For
further
details, see
the
following paragraph.
2. PRECAUTIONS FOR CONNECTION
The user should first carefully check
the
specifiecations
of
each peripheral device before connection
is
made.
This paragraph describes general precautions.
1)
Electrical characteristics
of
the
input/output
pins
Confirm
that
the
peripheral device
to
be
connected
satisfies
the
characteristics shown
in
Part IV, 3, Elec-
trical characteristics
of
input/output
pins, p.
O.
I n particular, make sure
to
check
that
the
output
volt-
age
of
the
peripheral device does
not
exceed
the
maxi-
mum
input
voltage
of
the
MZ-1
E02 interface. Excessive
signal voltage can cause damage
to
the
interface unit.
2)
Automatic
handshaking
mode
Confirm
that
data
is
transmitted
to
the
peripheral device
in
accordance
with
the
flow chart for
data
transmission,
as described
in
Part
Ill,
3,
Automatic
handshaking
mode, p. 8.
The
timing
of
the
signal
on
line
010
at
data
input
and
the
signal
on
line
09
at
data
output
must
satisfy
the
specifications
of
the
peripheral device.
The
setup
time
for
the signal
on
line
110
at
data
input
and
the
signal
on
line
19
at
data
output
must be long
enough, as specified,
to
ach ieve satisfactory
data
trans-
mission.
3) Manual
mode
If
data
transmission does
not
operate
satisfactorily in
the
automatic
handshaking mode, carry
out
data
trans-
mission
in
the
manual
mode
where
control
signals
are
input
and
output
by
the
program
(GB
IT
command).
Data transmission
in
the
manual
mode
takes 10 seconds
or
more, and
the
timing
of
each control signal
must
be
considered carefully.
4)
Other
When a
printer
is
connected as a peripheral device,
set
the
eR
code
of
the
printer
to
the
carriage return (with-
out
line feed) function, i.e.,
turn
off
the
automatic
line feed. A
CR
code
and an
LF
code are
output
auto-
matically following
data
output.
3. CONNECTING PROCEDURE
Note) Switch
off
the
power supplies
to
the
Model-3500
Series
Business
Computer
Main Unit and peripheral
devices
before
making connection.
1)
I nstalling the MZ·1 E02
Install
the
MZ-1
E02
in
one
of
slots
1,
2, 3
or
4 of
MZ-
1 U02 Expansion Unit
that
mounted
in
the
Model-3500
Series Business
Computer
Main
Unit.
After
installation,
secure
the
MZ-1
E02 with screws
that
closed
the
slot
cover.
The
interface
unit
is
assigned channel 0 when
it
is
mounted
in
slot 1
or
3, or the
unit
is
assigned channel
2 when it
is
mounted
in
slot 2
or
4. (See
the
following
table.)
3
MZ-IE02
Slot
number
1 2 3 4
Channel
number
0 1 0
1
2) Wiring
Solder
the
each loose wire
of
optional GP I/O
interface
cable [MZ-1C19] with a
proper
connector
of
peripheral
device according
to
Appendix 3.
MZ-1
E02
Contact
signal table.
Connect
all
GND lines (24 wires)
of
the
cable
to
the
GNO pins
of
the
peripheral device.
Extension
of
the
cable must
be
within 2
meters
and
sufficient precautions
must
be
taken
for noise protec-
tion
to
ensure reliability.
3)
Attaching
the
connector
Connect
the
interface MZ-' E02
and
the
peripheral
device with the cable
[MZ·l
C19].
And
then fasten it with
two
screws on
the
both
end
sides
of
the connector.
4)
Power·ON
Set
the
GP
I/O interface controlling FOOS Master disk
(accessories)
in
the
Mini-Floppy Disk Drive
unit
(channel-drive
number
AO)
that
located
on
the
right
hand side
of
the
Model-3500 Series Business
Computer
Main Unit.
Turn
power on
the
peripheral device (CRT display,
etc.), then
the
Model-3500 Series Business
Computer
Main Unit.
(The
FDOS Master
attached
with
Model-3500 Series
Business Computer Main Unit and
that
of
version No.
V2.0
are
not
applicable.)
7. PROGRAMMING
For
ease
of
understanding
of
the
syntax
and
rules
of
command
words,
the
syntax
notation
is
defined as follows. This nota-
tion
is
effective only
in
describing
the
syntax
and rules, and
should
not
be used
in
actual programs.
Symbol
I
[
J
I
I
( )
"
S, T
A
AS
N
X,
Y,
Z
C,
D,
E
---
~
...c'l.
~
Meaning
Indicates
the
separation
for
selection.
The
part
enclosed
in
brackets [ ] can be
omitted. When this
is
omitted,
the
func-
I
tion
is
merely invalidated
or
a
different
function
is
validated.
.
The
part
enclosed
in
braches { ) can be
written repeatedly using a
comma
( ,
).
The
aprt
enclosed
in
angles ( ) can be
written repeatedly using a semicolon (
;).
Indicates an iteger,
(Example:
10)
Indicates
a character constant.
(Example:
"NAME")
Indicates
a numeric variable (including a
numeric array
variable),
(Example:
NO)
Indicates a
S-
or @-type
character
variable
(including character array variable).
(Example:
DAS)
Indicates
a variable (numeric
or
character
variable) (including an array variable).
Indicates a numeric expression.
Indicates a character string.
Indicates a flow
of
syntax.
Indicates selection.
Indicates repetition.
Indicates omission.