Facit 5148 Service Manual page 7

AUXILIARY (S l)
Enables or disables the auxiliary device.
LOCAL LOOP BACK (52)
With
S3
=OFF;
S2
state has no meaning,
"TD" becomes "RD" independently of
With 53 ::: ON; 52 = ON enables transmitted
data from either the auxiliory device, (H
S1
=
ON) or the READER to be presented to
the PUNCH, if 54
=
ON and other punch start
conditions ore at hand.
LlNE (53)
When ON, received data from LINE ore pre-
sented to the interface and the auxiliary
device, transmitted data from the interface
or the auxiliary device ore presented to
LINE (full duplex). •
Baud rotes for PUNCH respectively READER are
individually selected,
When OFF, received dofo from LINE ore dis-
abled as well as transmitted data to LINE.
Baud rote fpr the
PUNCH
and READER is de-
termined
by
the punch selector. It is pos-
sible to hove ERROR from PUNCH/READER
tronsmitted os "not CTS" {ITT) to the oux-
iliory device if 51
=
ON.
S3
=
OFF olso sets PSS in start condition.
It means that any serial doto presented to
UART, if 54
=
ON, will be punched (no need
of
DC2).
PUNCH (54)
Enables or disables the punch.
4, 6
CONTROL SIGNALS See Fig. 14
The
control signals concern the information
transfer between LINE and AUXILIARY. They
ore associated with the recommendations set
up by RS-232-C
and C.C.l. T. T.
· Three signals will be discuss;d:
Doto
terminal
reody (108/2)
DTR
Clear to send (106)
CTS and
Request to send (105) RTS.
DTR to LINE is o kind of busy signal tel-
LINE that either the PUNCH or the aux-
iliary device is ready to accept data from
LINE. Note that the OR-function works in
such o way that when both ore connected, DTR
exists as long os ony of the two signals ore
present. By using jumper PS5: 1 a constant
DTR is set up. This DTR, either from PS5:1
or AUX is transferred only
if
Sl:::ON.
FIG 14
CTS
to
AUX is o signal telling AUX that ';
transmission
of
data
for
either the ····
READER(S3:0FF) or LINE is permitted. Thd:e
ore two possibilities to 1-set this signd}l:
by.
j1Jmper
PS6;8
or PS5:3. The difference
~.s
that PS6:8 affects only AUX while PS5:3
0
f.$co
enables or disables the reader start (RSSJ
when
S3
=
ON.
RTS to LINE
is a
signal that tells LINE that
either AUX(RTS if S1:::0N) or the READER(rof)
wants to send doto if S3:0N, RTS from AUX
may
be
substituted by jumper PS5:2. If S3:::0H
RTS is set with jumper PS5:4. '
5 PROGRAMMING _ _ _ _ _ _ _
5. l CHARACTER FORMAT
Independent of signal standards,
RS-232-C
or CURRENT LOOP, the following set-ups are
necessary: see Fig. 15.
WORD LENGTH
Jumper :pos designation
socket
word
bits
pos
PS
1 5
3
&
4
6
4
?_ ·~~
8
-
FIG 15
...
Pos ::: place where jumpers must be inserted.
In
other coses - no jumpers.
5.2 BAUD RATE, PUNCH/READER See Fig. 16
Set-ups needed for PUNCH/READER operations.
READER BAUD RATE PUNCH BAUD RATE
Jumper pos desig-
socket nation
PS
3 l 4800b
s
2 2
3-1200•;-
4
60
II
300"
l5(Y"
-110"
Jumper pos desig-
socket notion
PS
4 600b s
FIG 16
2 ·00
11
:3-
--r:>o..,."
- - i
4 TH:P•
-5
-75'-- . . - -
6
-55- .. - -
7
not used
NOTE only
one jumper in each
socket.
!iil1FF LINE the READER always hos the some
baud rote as the PUNCH.
~J>!-.:...-----+----:!IClem to
P'-+----''<l.i
I
$Ct>W06i
,.,.._...,,,,,i----..-i'""t"
Dt:iru
'''"'""'!
rff'ly(lOlli)