Rockwell Automation 1408-EMxx PowerMonitor 1000 Unit - Manual (Page 10)

10 Publication 1408-UM001B-EN-P - May 2008
Chapter 1 Powermonitor 1000 Overview
What Can I Do Using Communication Networks?
When you use communication networks with the power monitor you
can do the following things.
•
Configure analog input parameters such as PT/CT ratios
•
Configure communications parameters such as IP address
•
Read real-time power and energy data
•
Read energy logs
Communication Overview All Powermonitor 1000 units come standard with an RS-485 serial
communication port. Models with catalog numbers ending in -ENT are
equipped with an Ethernet 10BaseT communication port. This section
covers serial and Ethernet communication, the available protocols,
and what protocols to use for your application.
Serial Communication
The RS-485 serial communication port allows serial communication to
your power monitor. This port can be configured to communicate
using the protocols listed the Serial Communication Protocols table.
Serial Communication Protocols
Protocol Applications
DF1 Half-duplex Slave The DF1 Half-duplex Slave protocol may be used for point-to-point or multi-drop
communication using a DF1 Polling Master driver for RSLinx software, or when using
explicit messages from Rockwell Automation controllers communicating via DF1
Half-duplex Master.
DF1 Full-duplex The DF1 Full-duplex protocol may be used only for point-to-point communication using a
RS-232 DF1 driver for RSLinx software, or when using explicit messages from Rockwell
Automation controllers communicating via DF1 Full-duplex.
Modbus RTU Slave The Modbus RTU Slave protocol may be used for point-to-point or multi-drop
communication with a client using the Modbus RTU Master protocol for PLC controller
communication.
Auto-sense With auto-sense selected, the RS-485 port switches among the available serial
protocols based on the format of the packets the port receives.
DH485 The DH485 protocol may be used for point-to-point or multi-drop communication using a
1747-PIC/AIC+ driver for RSLinx software, or when using explicit messages from
Allen-Bradley controllers or HMI (PanelView) terminals communicating via DH485.
TIP
When configuring serial communication, users should verify
that all serial devices wishing to communicate to the power
monitor have the same communication rate, and the same data
format.