Schneider Electric 174 CEV - Manual (Page 8)

Modbus Plus to Ethernet Bridge
3
Figure 1 Bridge Overview
BRIDGE
8 Data Paths
TCP/IP
Modbus Plus
BP85
Modbus Plus
Bridge
Ethernet
Modbus Plus
Modbus Plus
Additional
Networks
Interface
Interface
8 Program Paths
The bridge maintains two internal mapping tables that provide address mapping
between IP addresses (255.255.255.255) and Modbus Plus path addresses
(64.64.64.64.64). The user can define the mapping at a local keyboard and
monitor connection, using a configuration utility that is stored in the bridge.
Mapping tables can also be downloaded by HTTP from the Ethernet host to the
bridge. If neither method is used, the bridge provides default mapping tables.
The user can assign the bridge’s IP address through a BOOTP server using the
bridge’s MAC address, or locally by means of the bridge’s configuration utility.
The bridge’s Modbus Plus address is assigned in hardware switches on the
bridge’s Modbus Plus card.
The bridge is supplied with brackets for mounting on a vertical panel or horizontal
shelf. Its rear panel has connectors for the networks and for operating power, and
LED indicators for the power, Ethernet and Modbus Plus communication status.