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EATON Powerware
®
Modbus
®
Card User’s Guide S 164201376 Rev C www.powerware.com
1
Chapter 1 Introduction
The Eaton
®
Powerware
®
Modbus
®
Card is an X-Slot
®
connectivity device
that allows you to continuously and reliably monitor the UPSs in your
Building Management System (BMS). The card uses the Modbus
protocol to integrate data from the UPS into your building management
software, such as Wonderware
R
The Modbus Card, shown in Figure 1, has the following features:
S RS-485 communication through an isolated DB-9 port or isolated
terminal strip
S Selectable termination and polarity resistance
S RS-232 communication through a DB-9 port
S Supports Modbus READ INPUT STATUS and READ INPUT REGISTER
commands
S Two-wire or four-wire communication topology
S LEDs showing communication activity
S The Modbus Profiler tool can generate a Modbus register map for
easy integration into your building management software (see
page 17)
S X-Slot design for UPSs with an internal X-Slot or installed in a
Powerware Expansion Chassis for UPSs that do not have internal
X-Slots
RS-485 Modbus
(use either the DB-9 port or terminal strip)
RS-232 Modbus DB-9 Port
Configuration PortCommunication LEDs
Figure 1. The Modbus Card
Figure 2 shows a Powerware UPS added to an existing network by
connecting the terminal strip on the Modbus Card to the RS-485
terminals on another device.
.