Operation
Registers
Registers are used to store the parameters which control communications.
Each register has variables that determine how the Modem operates or sup-
plies information on the Modem’s current condition. The Modem has
14
registers:
Table
5.
Registers
qegister Range Unit Function Default
so
s1
s2
s3
s4
s5
S6
s7
S8
0-255
0-255
0-1 27
0-1
27
0-1 27
0-32,127
2-255
1-255
0-255
s9
1-255
S10 1-255
s11 50-255
S12 20-255
S13-Sl5
S16
0
1
Ring
Ring Counts the rings.
ASCII code Defines the escape code character.
ASCII codeDefines the CR code character.
ASCII codeDefines the
LF
code character.
ASCII codeDefines the
BS
code character.
Defines the rings in answer mode.
Seconds
Seconds
Seconds
1/10
sec.
1/10
sec.
Millisec.
1/50
sec.
Defines the dial tone wait time.
Defines the carrier wait time.
Defines pause duration for comma
(actual maximum value is
54,
but a
value up to
225
can be input).
Defines carrier detect response
time.
Defines carrier
loss
time to hang
UP.
Defines touch-tone dialing speed.
Defines escape code guard time.
Not used.
Self-test mode
OFF.
Self-test mode ON.
O*
0
43
13
10
8
2
30
2
6
7
70
50
0
*
When DIP SW
6
is
OFF,
the Modem will power-up in auto answer with
SO
=
1.
Register
SO
defines the number
of
ringing signals before
a
call is answered;
register S1 counts the rings; registers S2-S5 define the function key charac-
ters; registers S5-Sl2 control the function time and register S16 is for the
self-test.
Note:
The
ASCII
code value is expressed in decimal.
20
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