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HOW TO RETRIVE DATA
3-2. Modem Communications Procedure
Tha CJ-V99/CJ-V77 controls the time of communications
with modem
by the schedule function in the Service
mode, The answer code of the modem will be ignored if
no schedule
is specified.
It is necessary,
therefore,
to
specify hours and minutes for modem
communications.
The CJ-V99/CJ-V77 starts modem communications ac-
cording
to the specified
schedule.
Note
that the CJ-
V99/CJ-V77 only answers to incoming calls from other
end, and has no function for calling.
The CJ-V98/CJ-V77
performs modem
communications
as follows:
1) The answer code RING is sent from the modem, and is
activated from the incoming call.
Upon reception of RING, the CJ-V99/CJ-V77 sends
the command ATA to the modem and activates it to
on-line.
The CJ-V89/CJ-V77
readies the Automatic
Service
mode when it receives the answer code CONNECT
from the modem.
After this, perform the same steps as in the normal! Au-
tomatic Service mode. Start with inputting the pass-
word,
To terminate communications,
input the password
again. At the same
time the CJ-V99/CJ-V77
exits
from the Data Retrieval mode, it changes the modem
to the local command state from on-line by operating
DTR of the RS-232C control line and disconnects auto-
matically.
During on-line, if no access is made by the supported
commands
in the Data
Retrieval
mode,
the CJ-
yeeeNtT disconnects in the same manner as with
step
5 ) ,
2)
3
4
5
8
60
3-3. Status Setting Required for Modem
As the protocol supported by the CJ-V99/CJ-V77 is limit-
ed in the way mentioned above, the modem requires a sta-
tus setting as mentioned below. With AT modems, the sta-
tus must be set in the non-volatile profile contained in the
modem.
1) Returns no echo in the command state.
Command: ATEO
2) Returns answer code.
Command; ATQO
3) Returns answer code in ASCII format.
Command: ATV1
4) Returns no answer code other than 3-2-1.
Command: ATXO
5} Disconnects when the control line ER {DTR) turns to
OFF from ON, and changes to the local command
state.
Command: ATD2
6} Uses the CR code as a terminator at the end of an an-
swer code.
Command: ATS3=13
7} Specifies the set OFF time of the control line ER (OTR)
to 0.08 second or less.
Command: ATS25=5
3-4, Connection to Modem
Moder
CJ-V99/
(25 pins)
C5-V77
GND 1
SSS
1 GND
TXD 2
—+
27XD
RXD 3.
—
3 RXD
RTS 4
6 RTS
cIss
5cTS
DSR 6
——+
8 DSR
GND7
Seer
7 GND
DTR 20
Ss
4DTR
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