User manual
605M-D1 GPRS Modem User Manual
man_605M-D1_1.5.doc Page 16
Serial Port Settings
:
All 605M-D1 modems have a fixed factory default serial baud rate of 9600. Any
changes to this speed should be reflected in the serial port settings while
establishing the connection to the modem.
If a com port is not already selected then the serial port settings window is
automatically displayed when you hit the Connect button. Alternatively, it can be
displayed by clicking on the command menu, Comms > Serial Port Setup
The default comm. port settings for connecting to a 605M-D1 modem are,
Baud Rate : 9600
Data Bits : 8
Parity : None
Stop Bits : 1
Flow Control : None
As you may notice that these fields are disabled by default and don’t need to be
changed. However, if you do need to change these settings then you have to
select “Advanced Config” which is discussed later under the section Configuration
> Advanced Config.
NOTE: Setting the serial baud rate of the 605M-D1 modem to auto (AT+IPR=0) may cause problems while
performing diagnostics. Therefore, it is recommended to keep the serial baud rate to a fixed value.
Serial Connection
:
Connect the 605M-D1 modem’s RS-232 port to the serial port of the host PC and power it up. Once the modem is
powered up it can go into two modes,
Automated Connection Mode: This is an ELPRO proprietary design and lets the 605M-D1 modems establish a
M2M connection in conjunction with the 605M-R1 GSM/GPRS Routers. The 605M-D1 modem is programmed to go
into the automated connection mode based on the stored configuration data if it does not receive an AT command
on its RS232 port within 10 seconds of power up (booting). Refer to Appendix D for the automated connection mode
flow diagram.
AT Command Mode: This is the mode we need to
be in for talking to the modem through the
configuration software. The easiest method is to
initiate connection from the configuration software
within 10 seconds of power up. The configuration
software automatically sends an AT and you should
get an OK back on successful connection. Failure to
get an OK reply means you don’t have the AT
command mode or there is some other problem in
communication with the modem (check serial
connection and/or power cycle the modem).