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Keyword Dictionary
MODEM ON
high-level modem
statement
I
t'10D E t' 1 0
t·~
t'10DEt'1 0
t·~
Turns the modem on.
t'10DEt'1
Ot·~
needs only be executed once each time the HP-75 is turned on. Once
on, the modem will remain on until
t'10DEt'1 OF F
or
ItH T I AL I ZE II: t'lODt'1"
is executed, or until
the HP-7 5 is turned off (or turns itself off).
When the modem is turned on, it performs a self -test. If the test fails, the modem reports %F AIL or %9.
If the test passes, the modem reports %OK or %4
(%4
followed by a space--see "Turning the Modem On" in
Section 2). The command character will be setto
%,
the modem will be in
MODEM
mode and on-hook, and
command characters will be processed normally (see the
U
(UN LISTEN)
command).
The following
parameters will be restored to their most recent settings (the letter in parentheses is the low-level
command that sets the parameter):
Modem Parameters
Restored at Power On
Ring count (C)
Command echoing (E)
Data format (parity)
(F)
Data echoing
(G)
Handshake protocol
(K)
Response length
(L)
Additionally, the transmit and receive buffers are cleared. If the modem is already on, however,
t'1ODEt'1
Ot·~
has no effect-no parameters or buffers are changed.
Errors: 151, 152
MODIN$
high-level modem
function
I
t'10DH·\$
[i:t=t'10D I tH:
Reads data from the modem receive buffer. Returns a string containing not only the current contents of
the receive buffer, but also whatever data was saved by
t'1ODOUT
(see
t'10DOUT).
Returns a null string if
there is no data from either location.
Errors: 1 6, 1 50, 1 5 1, 1 53
71
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