Moxa Technologies 5600 Bedienungsanleitung PDF herunterladen (Seite 9)

MOXA Tech Note

PPP Connection Between NPort 6000 Servers

4) ping 192.168.13.160 (NPort 6450)

5) ping 192.168.13.151 (PC#2)

You may also directly access the NPort 6450 or resources on PC#2 to verify that

there are no problems at any stage of communication.

* PC#1 will not be able to obtain a response from 10.10.10.x until the PPP

connection is established.

7. Q&A

7.1 Q: Can I use PPP with the NPort for remote communication between two PLCs?

A: Yes. Two NPorts can be used to establish a PPP connection between two PLCs

with unique IP addresses on the same subnet. This is an effective way to extend

communication over long distances, and is essentially the same architecture for a

PPP connection between PC#1 and PC#2. As soon as Ethernet packets are routed

from one PLC to another, the corresponding NPort will automatically dial out to the

other NPort and establish the PPP connection.

7.2 Q: Can a PPP connection be established using a null modem cable instead of using

modems?

A: Yes. In fact, it is easier to establish a PPP connection with a null modem cable

rather than with modems. When the configuration is complete and the null

modem cable is attached, the PPP connection should function as normal.

7.3 Q: My PC already has a default gateway. If I am unable to configure the NPort as

the PC's gateway, what should I do?

A: In this kind of network environment, you should try adding a routing table

entry on your PC. This is done at the command line as follows:

route ADD 192.168.13.0 MASK 255.255.255.0 192.168.12.170 METRIC 3 IF

In this example, 192.168.13.0 is the destination, 255.255.255.0 is the netmask,

and 192.168.12.170 is the gateway.

7.4 Q: Sometimes, I am unable to establish a PPP connection on my PC. What can I do

to resolve this?

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Moxa Technologies 5600 Bedienungsanleitung Seite 9