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Appendix Q
Hayes Modem AT Command Protocol
The Hayes Modem AT Command Protocol is used to make various settings or control remotely a Hayes
modem connected to the Serial Communications Unit/Board via RS-232C cable.
Protocol Configuration
The configuration of the Hayes Modem AT Command Protocol is shown below.
Note
1.
Refer to sequences No. 561, No. 571, and No. 581 for dialing operations.
2.
Ladder Interface Settings
YES:
User settings are required for the 3rd and 4th operands of PMCR(260).
NO:
Send word allocation:
Set the constant 0000 for the 3rd operand (S).
Receive word allocation:
Set the constant 0000 for the 4th operand (D).
3.
The hexadecimal equivalents of sequences numbers are given in parentheses.
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 second 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
set in the words specified for the 3rd oper-
and 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 which
the line is connected. Send data is set in the
words specified for the 2nd operand of
PMCR(260). Receive data is stored in the
words specified for the fourth operand of
PMCR(260).
Yes
Yes
554 (022A)
Escape
Shifts the modem to escape mode (the con-
dition in which command input is available
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 SYSMAC CJ1W-SCU21-V1
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Страница 15: ...xvi...
Страница 89: ...60 Basic Operating Procedure Section 1 9...
Страница 151: ...122 RS 232C and RS 422A 485 Wiring Section 3 4...
Страница 173: ...144 Host Link Function for Replacing Existing PLCs Section 4 6...
Страница 223: ...194 Enhanced Protocol Macro Functions Section 5 6...
Страница 277: ...248 Communications Frames Section 6 8...
Страница 291: ...262 Basic Operating Procedure in No protocol Mode Section 7 4...
Страница 301: ...272 Auxiliary Area and CIO Area Allocations Section 8 3...
Страница 391: ...362 Introduction Appendix A...
Страница 421: ...392 CompoWay F Master Protocol Appendix B...
Страница 513: ...484 E5 K Digital Controller Read Protocol Appendix F...
Страница 571: ...542 E5ZE Temperature Controller Write Protocol Appendix I...
Страница 587: ...558 E5 J Temperature Controller Protocol Appendix J...
Страница 627: ...598 ES100 Digital Controller Protocol Appendix K...
Страница 661: ...632 V500 V520 Bar Code Reader Protocol Appendix M...
Страница 697: ...668 3Z4L Laser Micrometer Protocol Appendix N...
Страница 717: ...688 Visual Inspection System Protocol Appendix O...
Страница 755: ...726 V600 V620 ID Controller Protocol Appendix P...
Страница 763: ...734 Hayes Modem AT Command Protocol Appendix Q...
Страница 767: ...738 Changing Communications Port Settings Using STUP 237 Appendix R...
Страница 781: ...752 Revision History...