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Mocha Wan Interface Reference
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toEthernet Reference Charts
RS.232-C, V.24 Interface
pin assignments
RS.232-C
(V.24) Physical Characteristics
X.21 Interface
Pin assignments
V.35 Interface Pin assignments
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ASCII Symbolic Mnemonics
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0 |
1 |
2 |
3,4,5,6 |
7 |
F |
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0 |
nu |
dl |
sp |
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1 |
sh |
d1 |
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2 |
sx |
d2 |
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3 |
ex |
d3 |
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4 |
et |
d4 |
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5 |
nq |
nk |
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6 |
ak |
sy |
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7 |
be |
eb |
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8 |
bs |
ca |
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9 |
ht |
em |
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A |
lf |
su |
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B |
vt |
es |
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C |
ff |
fs |
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D |
cr |
gs |
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E |
so |
rs |
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F |
si |
us |
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de |
id |
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EBCDIC Symbolic Mnemonics
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0 |
1 |
2 |
3 |
4 |
F |
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0 |
nu |
dl |
ds |
- |
sp |
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1 |
sh |
d1 |
so |
- |
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2 |
sx |
sb |
fs |
sy |
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3 |
ex |
eu |
- |
- |
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4 |
pf |
ic |
by |
pn |
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5 |
ht |
nl |
lf |
rs |
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6 |
lc |
bs |
eb |
uc |
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7 |
de |
il |
es |
et |
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8 |
- |
ca |
- |
- |
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9 |
rl |
em |
- |
- |
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A |
sm |
cc |
sm |
- |
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B |
vt |
- |
- |
- |
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C |
ff |
du |
- |
ra |
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D |
cr |
sf |
nq |
nk |
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E |
so |
fm |
ak |
- |
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F |
si |
it |
be |
su |
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pd |
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DATA LINK CONTROL CODES
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SYM |
ASC |
EBC |
DESCRIPTION |
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ack |
06 |
2E |
acknowledge |
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bel |
07 |
2F |
bell - alarm |
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bs |
08 |
16 |
backspace |
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can |
18 |
18 |
cancel |
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cr |
0D |
0D |
carriage return |
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dc1 |
11 |
11 |
device control 1 |
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dc2 |
12 |
12 |
...2 |
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dc3 |
13 |
13 |
...3 |
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dc4 |
14 |
14 |
...4 |
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del |
7F |
07 |
delete |
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dle |
10 |
10 |
data link escape |
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em |
19 |
19 |
end of medium |
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enq |
05 |
2D |
enquiry |
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eot |
04 |
37 |
end of transmission |
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esc |
1B |
27 |
escape |
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etb |
17 |
26 |
end of transmit block |
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etx |
03 |
03 |
end of text |
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ff |
0C |
0C |
form feed |
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fs |
1C |
1C |
file separator |
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gs |
1D |
1D |
group separator |
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ht |
09 |
05 |
horizontal tab |
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lf |
0A |
25 |
line feed |
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nak |
15 |
3D |
negative acknowledge |
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nl |
85 |
15 |
new line (3270 bsc) |
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nul |
00 |
00 |
null |
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rs |
1E |
1E |
record separator |
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si |
0F |
0F |
shift in |
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so |
0E |
0E |
shift out |
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soh |
01 |
01 |
start of header |
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stx |
02 |
02 |
start of text |
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sub |
1A |
3F |
substitute |
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syn |
16 |
32 |
synchronisation code |
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us |
1F |
1F |
unit separator |
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vt |
0B |
0B |
vertical tab |
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RS.232-C, V.24 Interface pin assignments
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RS.232-C, V.24 Interface pin
assignments
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Pin |
Symbol |
V.24 |
RS.232 |
Origin |
Description |
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1 |
prot |
101 |
AA |
- |
Protective Ground |
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2 |
XMT |
103 |
BA |
dte |
Transmitted Data |
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3 |
RCV |
104 |
BB |
DCE |
Received Data |
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4 |
RTS |
105 |
CA |
dte |
Request to Send |
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5 |
CTS |
106 |
CB |
DCE |
Clear to Send |
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6 |
DSR |
107 |
CC |
DCE |
Data Set Ready |
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7 |
com |
102 |
AB |
- |
Signal Ground |
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8 |
DCD |
109 |
CF |
DCE |
Data Carrier Detect |
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9 |
9 |
- |
- |
DCE |
Positive Test Voltage |
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10 |
10 |
- |
- |
DCE |
Negative Test Voltage |
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11 |
STF |
126 |
- |
dte |
Select XMT Frequency |
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12 |
dcd |
122 |
SCF |
DCE |
Secondary DCD |
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13 |
cts |
121 |
SCB |
DCE |
Secondary CTS |
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14 |
xmt |
118 |
SBA |
dte |
Secondary XMT |
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15 |
XCLK |
114 |
DB |
DCE |
Transmit Clock |
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16 |
rcv |
119 |
SBB |
DCE |
Secondary RCV |
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17 |
RCLK |
115 |
DD |
DCE |
Receive Clock |
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18 |
18 |
141 |
- |
dte |
Local Loopback |
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19 |
rts |
120 |
SCA |
dte |
Secondary RTS |
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20 |
DTR |
108 |
CD |
dte |
Data Terminal Ready |
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21 |
SCI |
110 |
CG |
DCE |
Signal Quality Indctr |
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22 |
RI |
125 |
CE |
DCE |
Ring Indicator |
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23 |
DRS |
111 |
CH |
dte |
Data Rate Select |
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24 |
24 |
113 |
DA |
dte |
External XMT Clock |
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25 |
BY |
142 |
- |
DCE |
Busy - Standby |
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RS.232-C (V.24) Physical Characteristics
Voltages relate to
SIGNAL GROUND Pin 7 |
- +3volts to +25volts
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ON / SPACE / LOGIC ZERO
DATA 0
CONTROL LINE ON |
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+3volts to -3volts |
TRANSITION REGION |
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-3volts to -25 volts |
OFF / MARK / LOGIC ONE
DATA 1
CONTROL LINE OFF |
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X.21 (RS.422) Pin assigments
Note: For dual clock X.21 circuits
Pins 6 + 13 are Recv Clock
Pins 7 + 14 are Xmit Clock |
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Pin |
signal |
Pin |
signal |
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1 |
unused |
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2 |
XMIT A |
9 |
XMIT B |
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3 |
CTRL A |
10 |
CTRL B |
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4 |
RECV A |
11 |
RECV B |
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5 |
INDIC A |
12 |
INDIC B |
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6 |
CLOCK A |
13 |
CLOCK B |
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7 |
unused |
14 |
unused |
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8 |
Ground |
15 |
unused |
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V.35 pin assignments |
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