WIRING
DATA
2.2
FX-85/185
Connector
CN1-FX85/185
Use:
Data
exchange
between
host
computer
and
the
Printer.
TABLE 2-1 PIN ASSIGNMENT OF CN1 (FXMB
Circuit
Board)
PmlWIntMfae*
Wltti ttMM
tigRal^
uMtwistad-patrca'
b4«
tnd
connaci
"fU-
tuffl-to
LOGIC
6N0.
Not*: Th«
•tgntla
Mfhich
ara
aetiva
at
-LOW-waindicMad
byabarabova.
Signal
PfatNo.
10
12
13
Ratum
PbiNa
10
20
21
22
23
24
28
26
27
2S
29
30
Slgnai
0ATA1
2
3
4
6
«
7
8
ACKNLG
BUSY
PE
SLCT
Tranamlttar
HoatComputar
HoatComputar
Pnntar
Printar
Prinlar
Oaacflption
STROBE
pulaa
for
ratd>in
of
data,
pulsa
wridth
muai
ba
moia
than
0.6 un at racatvlng larmintl.
Tha signal laval ia normally
HIGH;
raad-in of
data
la
parformad
at
tha LOWlaval of thia atgnal.
Thaaa
algnala
rapratant
informa
tion of
tha
1at to
Sth
bita of paral-
laldata raapactlvaty- Each aignal
iaat
HIGH
laval whan data talogi
cal 1 and LOW
whan
logical 0.
LOW aignal
indicataa
that
data
haa
baan
racaivad
and
that
tha
printar
la
raady
to
accapt
othar
data.
Approx.
12f«pulaa.
A HIGH
signal
indicataa
that
tba
printar
cannot
racaiva
data.
A LOW signal
indtcaiaa
that
tha
printar
can
racaiva
data.
Tha atgnal
bacomaa
KK3Hin tha
fotloMring
easaa;
1. During
data
antiy
2. During printing oparation and
part
of
haad
carrtar
oparation
3. During
part
of
papar
faad
4. Ounng
pnntsr
arror
status
5.
In
OFF-LINE
suta
A HIGHsignal indieataa
that
tha
printar
is
out
of
papar.
Putlad up to '»5V
through
3.3 IlO
rasiatanca
2-2
EPSON
PRINTERS
TABLE 2-1
(cont.)
Signal
Pin
No.
Ratum
Pin
No.
Signal
Transmlttar
Daacription
14
AUfb
FEEDXT
Host
Computar
With this signal baing at LOW la-
val tha
papar
is automatically fad
ona
Unaaftar printing.
16
NC
Notuaad.
16
GNO
LOGIC
GND
laval.
17
FG
Printar
FRAME
GNa
18
NC
Notuaad.
19
-
30
GND
TWISTED-PAIR
RETURN
signal
GND
laval.
31
iNff
Hoat
Computar
Whan
tha laval of thia signal
ba
comaa
LOW,
tha
print
buffar
ma-
mory ia claarad. Tha pulaa
width
must
ba moi*
than
60
^ at
tha
racatving taimlnaL
32
^RttbR
Printar
Tha laval of thia aignal
bacomaa
LOW.
Whan
tha
printar
ia In tha
arror
autua:
1. PAPER END
sttta
(cancatlad
byESCS)
2.
Abnormal
motor
oparatlon
3.
OFF-LINE
auta
33
GND
Twistad pair ratum laval at groundL
34
NC
NotuaadL
36
«6V
Printar
Pullad up t04^6V
thraogh
3.3 kO
rasistanca
36
SLCTtN
HoatComputar
With thia aignal baing at LOW la
val.
tha
printar
ia
aalactad.
NOTISs
1. "Ratum" danotaa "TWISTEDPAIR
RETURN"
and la to ba
connaetad
at aignal ground laval.
2. AH Intaifaca conditiona ara
basad
on TTL lavaL Both tha tiaa and fall tlmaa of aach aignal muat
ba
laas
than
0.2pB.
3. Data transfar muat not ba carriad out by igi oring tha
ACKNLG
or BUSY signal.
Whan
data
titnafar
ia
mada
in an ERROR
atata.
tha
pnnting
and
procaaaing of tha
data
is not guarantaad.
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