
R-117
A Standard System Protocol
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
R-6 Ha
y
es Mod
e
m A
T
Com
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and
Pr
otoc
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l
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f
R
-6-1
Protocol
Configur
ation
R-6
Hayes Modem AT Command
Protocol
The Hayes Modem AT Command Protocol is used to remotely make various settings or control a Hayes
modem connected to the Serial Communications Unit/Board via RS-232C cable.
The configuration of the Hayes Modem AT Command Protocol is shown below.
*1
Refer to sequences No. 561, No. 571, and No. 581 for dialing operations.
R-6-1
Protocol Configuration
Sequence
No.
Communications
sequence name
Function
Ladder interface
Send word
allocation
Receive word
allocation
550 (0226)
Initialize modem
(general-purpose)
Initializes the modem connected to the
Serial Communications Unit/Board. The ini-
tialization command is set in the words
specified for the 3rd operand of
PMCR(260).
Yes
No
560 (0230)
570 (023A)
580 (0244)
Initialize modem
(specialized)
Initializes certain OMRON Modems.
No
No
561 (0231)
571 (023B)
581 (0245)
Dial
Dials from the modem connected to the
Serial Communications Unit/Board. AT
commands and telephone numbers are set
in the words specified for the 3rd operand
of PMCR(260). This sequence can be used
only for certain OMRON modems.
Yes
No
552 (0228)
Password
After the line is connected, the password
sent from the other exchange is verified to
confirm that the line is connected to the
desired exchange. The normal value of a
password is set in the words specified for
the 3rd operand of PMCR(260).
Yes
No
553 (0229)
Data send/receive
(general purpose
sequence)
Sends arbitrary data to the exchange to
which the line is connected. Send data is
set in the words specified for the 2nd oper-
and of PMCR(260). Receive data is stored
in the words specified for the 4th operand
of PMCR(260).
Yes
Yes
554 (022A)
Escape
Shifts the modem to escape mode (the
condition in which command input is avail-
able during data communications). The
escape code is fixed to "+++"
No
No
555 (022B)
Hang up
After shifting to escape mode, the line is
disconnected.
No
No
562 (0232)
572 (023C)
582 (0246)
Initialize and dial
Executes continuously from initialization to
dialling operations for certain OMRON
Modems.
Yes (*1)
No
590 (024E)
Escape to hang up
Executes continuously from shifting to the
escape mode to hanging up.
No
No
Содержание CJ1W-SCU22
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Страница 250: ...6 No protocol Mode 6 22 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 460: ...A Standard System Protocol R 126 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 473: ...Index 1 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494 I Index...