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Chapter 4 Detailed Descriptions of the Fieldbus Network Adapters
4.4 Modbus
TCP Network Adapter EPXMBE001/EPXMBE101
®
The EPXMBE001 network adapter is a Modbus TCP participant developed according to IEC 61158. The
network adapter is the head module for the RSTi-EP communication bus, to which up to 64 active
RSTi-EP modules can be connected. The Modbus TCP network adapter has two Ethernet ports and an
integrated switch supporting a line network structure.
The EPXMBE101 network adapter is a variant of EPXMBE001 network adaptor, which supports
"Modbus Dual LAN mode" of operation. In this mode of operation, both the Ethernet ports
communicate with two separate networks. For this purpose, the EPXMBE101 has two MAC addresses
and two IP addresses that can be defined separately over two different LAN networks. The "Modbus
Dual LAN mode" is suitable to communicate with two synchronized control units simultaneously.
Thereby both the control units have the complete read and write access. If the "Modbus Dual LAN
mode" is disabled in EPXMBE101, the network adaptor functions as EPXMBE001 with a single LAN
network.
The network adapter can be accessed with a system-independent web server application via the
USB service interface or the Ethernet. Thus, all information, such as diagnostics, status values and
parameters, can be read and all connected modules can be simulated or forced.
The station's main power supply is integrated in the network adapter. Power is supplied via two 4-
pole connectors, separated into the input and output current paths.
N
etwork Adapter EPXMBE001/EPXMBE101
GFK-2958E
RSTi-EP User Manual
76
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