W2000 Network Addressing to PLCs

  • Thread starter Thread starter Ernie Adsett
  • Start date Start date
E

Ernie Adsett

Hello,

I'm planning to connect a W2000 PC to an industrial PLC network (Allen
Bradley) for the first time and would like it to work :-). We will be
communicating between our VB program, a Kepware Server and the PLCs.
Just have 3 questions:

Info received from plant for the W2000 node: IP Address:
172.16.206.156, Subnet Mask: 255.255.255.0, Getway: 172.16.206.11.

Question 1: Shouldn't the subnet mask be 255.255.0.0 or can it be
255.255.255.0?
Question 2: Do I need an address for a DNS?
Question 3? What about the domain name - is it necessary?

In other words, can I just enter the three numbers above and the network
will recognize me without concern for DNS, domain name, etc.

Many thanks!

Ernie Adsett
AMT Inc.
 
If the person in the plant responsible for the network is telling you to set
the IP , Default Gateway, and the Sub Net Mask to the numbers that he gave
you, that's what I would do if you want it to work.
As far as the sub net mask being 255.255.0.0 for a 172.16.x.x net
working, that is the default mask but that can be customized. A
255.255.255.0 subnet mask on a 172.16.x.x network would give you more
Network ID's with fewer computers on each of them.
And last an ip of 172.16.x.x is a private ip address that is not usable
on the internet, so I don't think you need to worry about a DOMAIN NAME or
DNS, unless they are using it on there own private network and if they are
the plant computer guy would have told you an DNS address.
 
Just the question do 172.16.206.11 is local IP ( after some firewall / NAT )
or that ip in internet ?
did ping -a 172.16.206.11 show really that one ?
Arkady
 
Under RFC #1918 the IP range 172.16.0.0 to 172.31.255.255 is a private
address range set aside by the Internet group IANA. They will not work on
the internet.
 
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