CHAPTER 5 - PXG200E THEORY OF OPERATION
EATON
PXG200E User Manual • IM02603001E
Rev 5, 11-May-2012 • Firmware Version 5.03:3835
12
Supported Downstream Networks
The PXG200E can simultaneously support a combination of INCOM and
Modbus RTU devices.
The PXG200E can support a
total
of 64 devices at a time between the two
ports.
Individual port limits:
•
INCOM port
– 64 device limit
•
COM1 port
– 32 device limit, supports Modbus RTU devices
Therefore, INCOM port + COM1 port cannot exceed 64 devices.
INCOM Network
The PXG200E continuously exchanges data with devices on an INCOM
network and makes that data available via an embedded web server and
several other Ethernet protocols. This data exchange includes selected data
buffer reads and INCOM slave actions. Additionally, the PXG200E supports
synchronization of clocks on INCOM devices that support the set time and
date command.
In addition to the continuous data exchange, the PXG200E supports pass-
through of encapsulated INCOM messages over Ethernet. This pass-through
capability allows the use of existing PowerNet software to configure INCOM
devices from the Ethernet port of the PXG200E.
Modbus RTU Network
The PXG200E continuously exchanges data with devices on a Modbus RTU
network and makes that data available via an embedded web server and
several other Ethernet protocols. This data exchange includes selected input
register reads.
In addition to the continuous data exchange, the PXG200E supports direct
Modbus TCP pass-through functionality to access the Modbus RTU devices
from the Ethernet port of the PXG200E. This pass-through capability allows
access to all read and write registers in a Modbus RTU device. It also allows
for the use of any third party Modbus device configuration tools that support
connectivity through a standard Modbus TCP gateway.
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