B&B Electronics VFG3000 - Manual - Manual (Page 32)

E THERNET C ONFIGURATION V LINX F IELDBUS G ATEWAY M ANAGER U SER M ANUAL
P AGE 16
P
HYSICAL
L
AYER
The Physical Layer options control the type of connection that the Gateway will attempt to
negotiate with the hub to which it is connected. Generally, these options can be left in their
default states, but if you have trouble establishing a reliable connection, especially when
connecting directly to a PC without an intervening hub or switch, consider turning off both
Full Duplex and High Speed operation to see if this solves the problem.
R EMOTE U PDATE
The Remote Update option is used to enable or disable firmware and configuration download
via TCP/IP. As noted in an earlier section, remote firmware updates over TCP/IP require the
units to be fitted with a CompactFlash card. Since downloads will more than likely involve a
firmware update at some point, such a card is highly recommended when using this feature.
P
ROTOCOL
S
ELECTION
Once the Ethernet port has been configured, you can select the protocols that you wish to use
for communications. Up to four protocols may be used at once, and many of these protocols
will support multiple remote devices. This means that you have several options when
deciding how to mix protocols and devices to achieve the results you want.
For example, suppose you want to connect to two remote slave devices using Modbus over
TCP/IP. Your first option is to use two of the Ethernet port’s protocols, and configure both as
Modbus TCP/IP Masters, with a single device attached to each protocol...