Instruction manual

Model DCP-NextG Digital Cell Phone Kit

+IPR=9600 : Baud Rate control. The CR200, and Array-based data loggers, such as

the CR510 and CR10X, are limited to 9600 baud communications. This command limits the

terminal communications speed to 9600 baud from its default of 115200. The response to this

command may not be visible as it may be returned at 9600 baud while the terminal emulator

is set to 115200. It is for this reason that the terminal emulator must be reconfigured to 9600

baud to match the modem in order to send mode commands. This parameter is automatically

stored in the non-volatile memory of the modem, so it will be retained during a power up.

This command is not required when using Pakbus-based data loggers (except the CR200) as

they will (by default) interface to the SAM3G+ modem at 115200 baud.

&W : Save to power up profile. This command saves the current configuration. This

should be done so the modem retains the settings when power-cycled.

NOTE ON AT&W: Some modems make use of the AT&F command. Do not use this

command with the SAM3GPLUS as it will reset the SMS mode, preventing SMS

messages from being sent or received correctly.

7.2.2 PC Modem Requirements

There are 3 connections in a modem link.

1. PC to Modem1

2. Modem1 to Modem2

3. Modem2 to Data logger

These connections do not have to be at the same speed. The AT+IPR = 9600 command that

we may have set in the modem is to lock the speed between logger and SAM3G+ modem at

9600 (Connection 3). The AT+IPR=9600 is only for Array-based data loggers and the

CR200X.

7.2.3 Data Logger Settings

The data logger will not require configuration and custom programming when using the

SAM3G+ modem unless one of the following items is required:

o Switch the modem power on and off via a relay or SW12V.

o Send an SMS message or alarm dial out based on some alarm condition.

o Have the data logger send commands to the modem to configure any settings.

o TCP/IP communications via the modem – e.g. email, FTP, IP callback.

These operations require the data logger to have certain commands in the program in order for

the logger/modem to operate correctly. For more information, see sections 8 and 9 below.