Using The Cfg Reset Switch; Using The Cfg Reset Switch During Operation - National Instruments ENET-232 Series User Manual

Using the CFG RESET Switch

Using the CFG RESET Switch During Operation

Note Pressing the CFG RESET switch has no effect if hosts are currently connected.
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table. Alternately, you can use NI Ethernet device configuration to
determine the hostname associated with your assigned IP address, and
change the hostname to match the DNS entry. Refer to the
Hostname section in Chapter 3,
information.
Because there are many other possible reasons for failure, contact your
network administrator if you are having problems getting DHCP to work.
When you can use DHCP and DNS successfully, you can use the hostname
form of the IP address to communicate with your product—even if the
numerical IP address changes with successive reboots.
If you are setting up a small network for your instrumentation system,
National Instruments recommends using static IP addresses, because they
are easier to implement and maintain. In this system, you can safely use the
numerical form of the IP address to communicate with your product
because the address is unlikely to change. Small networks are less likely to
have domain name services available that would resolve the hostname into
a numerical IP address.
The Configuration Reset (CFG RESET) switch is a recessed switch beside
the Ethernet (ENET) connector on the rear panel. Refer to Figure 2-2,
Panel of a Four-Port Serial Device
This switch performs two functions, depending on whether you press it at
power-on or during operation.
While the serial device server is operational, as indicated by a steady
yellow PWR/RDY LED, you can use the CFG RESET switch to place the
box into network configuration mode.
This special mode ensures that network parameters are not changed while
in normal operation mode. Because you cannot change the network
parameters unless you deliberately place the serial device server into
network configuration mode, the parameters are protected while in normal
operation. Hosts cannot connect to the serial device server while it is in
network configuration mode.
Chapter 6
Ethernet Configuration, for more
Server, for an illustration of its location.
6-3 ENET-232 and ENET-485 Series User Manual
Using Your Serial Device Server
Verifying the
Rear