csmstr - Omega Engineering

ETHERNET CONFIGURATION
CRIMSON USER MANUAL - MODULAR CONTROLLER
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.
REMOTE UPDATE
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.
PROTOCOL SELECTION
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...
For most protocols, this will produce higher performance, as it will allow simultaneous
communications with the two devices. It will, however, consume two of the four protocols,
limiting your ability to connect via additional protocols in complex applications. Your second
option is therefore to use a single protocol configured as a Modbus TCP/IP Master, but to add
a further device so that both slaves are accessed via the same driver…
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