APC Battery Management System manual How to recover from a lost password

Battery Management System

USER’S GUIDE

®

How to recover from a lost password

You can use a local computer that connects to the Battery Management System through the serial port on the rear of the master unit.

1.Select a serial port at a local computer, and disable any service that uses the port.

2.Reset the DIP switch #6 and #7 to the OFF postion.

3.Use the configuration cable (APC part number 940-0103) to connect the selected port to the serial port on the rear panel of the master unit.

Modbus and the control console share a common serial port. You can use either one or the other to access the Battery Management System. If you reconfigure the DIP switches to switch from Modbus to the control console, you must restart the computer for the changed to take effect

If you are using Modbus to access the Battery Management System, you must configure the DIP switches. For DIP switch configuration, see “Configure the DIP Switches” in the Installation and Quick Start Manual (.\doc\en\insguide.pdf),

See also provided in Portable Document Format (PDF) on the APC Battery Management System Utility CD and in printed form.

4.Run a terminal program (such as HyperTerminal®) on your computer and configure the selected port as follows:

–9600 bps (or 19200 bps, if you are using Modbus configured at that rate)

–8 data bits

–no parity

–1 stop bit

–no flow control

14