APC Battery Management System manual Select Modbus from the Battery System menu

Battery Management System

USER’S GUIDE

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Modbus

Modbus lets you view the Battery Management System through your building management services interface. It is read-only.

The Modbus interface supports 2-wire RS-485 with the following pin-out:

•Pin 2: TX/RX +

•Pin 3: TX/RX -

•Pin 5: GND

To configure Modbus using the Web interface, do the following:

•Select Modbus from the Battery System menu.

•Enter your settings.

To configure Modbus using the control console, do the following:

•Select Device Manager.

•Select Modbus.

•Enter your settings, including the baud rate at which your Modbus is operating, either 9600 or 19200.

To use Modbus, do the following:

• Configure the DIP switches for Modbus operation.

	To configure the DIP switches, see the Battery Management
	System Installation and Quick Start Manual
See also	(.\doc\en\insguide.pdf), provided on the APC Battery
	Management System Utility CD.
	The data that is available through the Modbus interface is defined
	in a spreadsheet (.\doc\en\AP9920_MBRegMap_xx.xls)
See also	provided on the APC Battery Management System Utility CD.

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