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Appendix│How to connect to the modem
This section describes how to connect the MN Converter to the modem and use it through the public line.
1. Basic configuration
Recommended modem: Analog - U.S.Robotics 56K FAXMODEM
GSM
- SIEMENS MC35
[System configuration figure connected with the modem (Example)]
Public network
Shield RS-232C
(Straight cable)
Modem (GSM modem)
Personal computer
built-in modem
Example) GSM modem SIEMENS MC35
Shield RS-232C Straight Cable
D-SUB 9Pin (male) - D-SUB 9Pin (female)
[Connection diagram of the connection cable]
DB9 (female)
MN Converter side
Pin No.
1 2 3 4 5 6 7 8 9
Pin No.
1 2 3 4 5 6 7 8 9
DB9 (male)
Modem side
2. Modem initialization
The modem of MN Converter side is required to be initialized. Modem setting procedures by the MAINTENANCE TOOL are shown
below.
Procedure (1) Connect the personal computer with installed MAINTENANCE TOOL and the modem which is on the MN Converter
side using the Shield RS-232C cable (straight cable
Refer to the previous chapter for the details of the cable connection.
*1:
[Connection to the modem at Initialization]
Personal computer with
the installed
MAINTENANCE TOOL
Procedure (2) After finishing the cable connection, activate the MAINTENANCE TOOL and jump to the modem setting screen. Set 3
items shown below. Refer to the [Setting procedures] on page 6. As the AT commands are used for settings, also
refer to the manual of the modem.
(a) Set the modem to ignore the Data Terminal Ready (DTR) by AT command.
(b) Set the modem to ignore the Required Transmission Service (RTS) by AT command.
(In case of the modem with no RTS settings, set the modem to deactivate the H/W flow control by AT command.)
(c) Set the modem not to volatilize the memory of step (a) and (b) by AT command.
Indoor unit
Indoor unit
Outdoor
unit
M NET transmission line
ME
Remote
controller
MN Converter
Example) U.S.Robotics 56K FAXMODEM
Shield RS-232C Straight Cable
D-SUB 25Pin (male) - D-SUB 9Pin (female)
[Connection diagram of the connection cable]
DB9 (female)
MN Converter side
Pin No.
1 2 3 4 5 6 7 8 9
Pin No.
8 3 2
20 7 6 4 5 22
DB25 (male)
Modem side
) as shown below.
(*1)
Modem (GSM modem)
Shield RS-232C straight cable (*1)
［Setting Procedures］
1) After connecting the MAINTENANCE TOOL that is already installed on the personal computer and the modem, start the
MAINTENANCE TOOL.
2) On the Select Monitor mode screen, choose MN CONVERTER, Remote Connection, CMS-MNG-E, and the COM port that
are being connected and then choose Select .
3) Jump to the Connection setting screen. Choose MODEM initial setting .
4) Jump to the Connection modem initial setting screen. Choose New settings .
5) Jump to the AT Command transmit screen.
Enter the AT command corresponding to the procedure (2) (a), (b), (c) in the space under AT COMMAND.
Then choose Transmission beside the entry space.
*Refer to the manual of the modem and enter the proper AT command.
In case of U.S. robotics 56K FAXMODEM, see below for the proper AT command.
(a). → AT&D0
(b). → AT&R1
(c). → AT&W0
Notes
●AT command may differ depending on the modem type. Check the proper AT command referring to the
manual of the modem.
Example: AT command transmit screen
AT COMMAND
AT＆W0
→AT&D0
③ The setting command is transmitted.
←OK
④ The result
→AT&R1
←OK
→AT&W0
←OK
6) When "Transmission" is chosen, AT command is sent to the modem. When the setting is completed, the modem sends back
OK command. This is the end of the modem setting by AT command.
7) Close the MAINTENANCE TOOL.
After initializing the modem, connect each unit as shown in the System configuration figure connected with the modem (Example) on
page 5.
3. Communication error with the modem
When the MN Converter cannot communicate with the modem properly, disable data compression function and set the baud rate to
9600bps. For settings, refer to chapter 2. Modem initialization.
(1). Data compression function: Disabled
(2). Baud rate setting: 9600bps
Send the AT command corresponded to the contents (1) and (2) to the modem, and make the settings. Refer to the manual of the
modem and set.
Appendix│How to connect RS-232C to a Personal Computer
This section describes how to connect the MN Converter through RS-232C to the Personal Computer.
[System configuration figure connected with the Personal computer (Example)]
Outdoor
Unit
Personal computer with
the installed
MAINTENANCE TOOL
Shield RS-232C cable
(cross cable)
5
① Enter the AT command.
② Chose "Transmission" after
Transmission
entering the AT command.
[Connection diagram of the connection cable]
Shield RS-232C cross cable
Indoor Unit
Indoor Unit
D-SUB 9Pin (female) – D-SUB 9Pin (female)
M-NET transmission line
DB9 (female)
Pin No.
1 2 3 4 5 6 7 8 9
ME
Remote
controller
Pin No.
1 2 3 4 5 6 7 8 9
DB9 (female)
MN Converter side
Personal computer side
6
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