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Frequently Asked Questions
16
Here are answers to some common questions from NetGuardian 16 users. The latest FAQs can be
found on the NetGuardian 16 support web page,
http://www.dpstele.com.
If you have a question about the NetGuardian 16, please call us at
(559) 454-1600
or e-mail us at
General FAQs
16.1
Q. How do I telnet to the NetGuardian 16?
A.
You must use
Port 2002
to connect to the NetGuardian 16. Configure your Telnet client to connect
using TCP/IP (
not
"Telnet," or any other port options). For connection information, enter the IP
address of the NetGuardian 16 and Port 2002. For example, to connect to the NetGuardian 16 using
the standard Windows Telnet client, click Start, click Run, and type "telnet <NetGuardian 16 IP
address> 2002."
Q. How do I connect my NetGuardian 16 to the LAN?
A.
To connect your NetGuardian 16 to your LAN, you need to configure the unit IP address, the subnet
mask and the default gateway. A sample configuration could look like this:
Unit Address:
192.168.1.100
subnet mask:
255.255.255.0
Default Gateway:
192.168.1.1
Save your changes by writing to NVRAM and reboot. Any change to the unit's IP configuration
requires a reboot.
Q. When I connect to the NetGuardian 16 through the craft port on the front panel it either
doesn't work right or it doesn't work at all. What's going on?
A.
Make sure your using the right COM port settings. Your COM port settings should read:
Bits per second:
9600 (9600 baud)
Data bits:
8
Parity:
None
Stop bits:
1
Flow control:
None
Important!
Flow control
must
be set to
none
. Flow control normally defaults to hardware in most
terminal programs, and this will not work correctly with the NetGuardian 16.
Q. The LAN link LED is green on my NetGuardian 16, but I can't poll it from my T/Mon.
A.
Some routers will not forward packets to an IP address until the MAC address of the destination
device has been registered on the router's Address Resolution Protocol (ARP) table. Enter the IP
address of your gateway and your T/Mon system to the ARP table.
Q. What characteristics of an alarm point can be configured through software? For instance,
can point 4 be used to sense an active-low signal, or point 5 to sense a level or an edge?
A.
The unit's standard configuration is for all alarm points to be level-sensed. You
cannot
use
configuration software to convert alarm points to TTL (edge-sensed) operation. TTL alarm points
are a hardware option that must be specified when you order your NetGuardian 16. Ordering TTL
points for your NetGuardian 16 does not add to the cost of the unit What you can do with the
configuration software is change any alarm point from "Normal" to "Reversed" operation. Switching
to Reversed operation has different effects, depending on the kind of input connected to the alarm
point:
Содержание NetGuardian 16
Страница 13: ...9 Fig 5 5 Optional 66 block connector pinout for controls...
Страница 62: ......
