Rockwell Automation 1425 PowerMonitor Wireless 250 User Manual
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Rockwell Automation Publication 1425-UM001A-EN-P - January 2012
Chapter 2
Hardware Installation
PC Receiver RS-485 Data Port Use and Configuration
The RS-485 mode of the PC Receiver requires special wiring for the DB9
connection. In order to activate the RS-485 mode, please connect the data port as
follows.
Figure 25 - PC Receiver RS-485 Wiring Diagram
As soon as the PC Receiver is powered on, it will choose the serial mode RS-232
or RS-485 according to the DB9 wiring. This mode will remain until the PC
Receiver will be power cycled (removing the DB9 connector will have no effect).
RS-485 mode is available on the PC Receiver unit with the date code 10267 or
later with firmware revision (or later) 1.5.15 (100 and 200 node) or 1.7.5.15 (10
node). Upgrade of an older PC Receiver (before date code 10267) is not possible,
as it is a different hardware revision.
RS-485 mode sets the device Modbus address to 247. The address may not be
changed. Only point-to-point communication is supported.
1
5
9
6
1
2
3
4
5
6
7
8
9
Inverting Signal -
NC
GND
Non-inverting Signal +
NC
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