4 Operating From a Personal Computer
24
Operation Guide Flatpack MCU,
351300.013, v8-2006-07
4.2.5 Modem Configuration
Both modems must be configured with specific communication parameters before they can be used. It is
recommended that the local modem used for communication with the Flatpack MCU(s) be dedicated to this
purpose and not shared for any other purpose.
;
Configuration of the remote modem (connected to the rectifier system’s monitoring/control
unit) is different to configuration of the local modem (connected to the PC).
4.2.5.1 Setting up the PRS (remote) modem
In order to configure the remote modem— to be connected to the Flatpack MCU Monitoring & Control
Unit— connect the modem to a PC, with the appropriate terminal emulation program, and use the keyboard
to enter the following communication parameters:
AT&F
Enter Load Factory settings
AT&D
Enter DTR option 0 (assumed ON and thus ignored)
AT&Q5
Enter The modem will try to negotiate an error-connected link
AT\N3
Enter Selects auto-reliable mode
ATS0=1
Enter Answers after 1st ring
ATQ0
Enter Enables result codes
ATV0
Enter Numerical result codes
ATE0
Enter Disables command echo
AT&W
Enter Stores the current configuration
4.2.5.2 Setting up the PC (local) modem
In order to configure the local modem— to be connected to the PC— connect the modem to a PC, with the
appropriate terminal emulation program, and use the keyboard to enter the following communication
parameters:
AT&F
Enter Factory settings
AT&S
Enter DSR will remain ON at all times
AT\N3
Enter Selects auto-reliable mode
AT&W
Enter Stores the current configuration
Note that it may be necessary to force the local and remote modems to connect at the same data rate, i.e.
9600. Consult the user manual provided with the modem to determine the correct AT command(s). These
commands may also be entered from within WinPower Silver (see Section 4.9.6, Modem Callback) for the
remote modem.
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