adccommunitymod (AutomationDirect) asked a question.
Created Date: July 30,2007
Created By: DCLittlejohn
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Hopefully someone here will know the answer to this one. I am using an Allen-Bradley (ZYPCOM manufactured) branded ethernet modem. AB part number 9300-RADES. I have it configured and can connect. When I ping the IP address of the H2-ECOM for my DL-260 PLC, I get a reply, but when I try to connect to the PLC or look at the ECOM in Net Edit 3, I cannot. Net Edit 3 gives me an "Error 10051 searching for devices " If I connect directly to an Ethernet port on the modem, I can connect and communitcate with the PLC via the ECOM module, so I know that via Ethernet the connection is good. I also am using the same modem connection to communitcate with a Eurotherm 2704 controller. I suspect my trouble has something to do with the IPX protocol or similar, but I have not yet been able to pinpoint it.
Created Date: July 30,2007
Created by: Tech Guy
Are you using UDP or IPX Protocol?
I'm pretty sure it will need to be UDP with the ECOM having an IP address.
Created Date: July 30,2007
Created by: DCLittlejohn
How do I configure it to use UDP protocol? I never seem to be able to get the ethernet connection working unless it is IPX?
Created Date: July 31,2007
Created by: Tech Guy
I'm not sure I have the room to fully explain how UDP/IP addressing works here, but here is a greatly shortened version.
Your computer needs a unique fixed IP address in the range of 192.168.0.0 to 192.168.255.255 or in the range of 10.0.0.0 to 10.255.255.255. This address cannot be used by any other device on the network. These address ranges are reserved for private networks. For more info go here and here .
Lets say you choose 192.168.0.200 for your computer address.
Your PLC ECOM card needs an address in the same range with the first three groupings or octets the same as your computer network address, the last number needs to be different. Lets say you choose 192.168.0.201 for your PLC address. You will use NetEdit to set the IP address into the ECOM.
Next you will create a com link in DirectSoft with the UDP address that you just assigned to the PLC. If you have trouble connecting, try HOST Engineering's FAQ's or call tech support at 1(800) 633-0405.
Created Date: July 31,2007
Created by: GKiser
Originally posted by DCLittlejohn:
When I ping the IP address of the H2-ECOM for my DL-260 PLC, I get a reply, but when I try to connect to the PLC or look at the ECOM in Net Edit 3, I cannot. Net Edit 3 gives me an "Error 10051 searching for devices "
The Error 10051 is from your PC's Winsock (the driver for its Ethernet card; NIC). Formally it is known as "WSAENETUNREACH " and is described as, "Network is unreachable. A socket operation was attempted to an unreachable network. This usually means the local software knows no route to reach the remote host. Very similar to Error 10065 WSAEHOSTUNREACH only this is usually related to IPX protocol. "
In NetEdit you can select IPX, or TCP/IP protocol (big buttons at top). Do you get this error with both selections?
Possible causes:
(1) 2 (or more) NICs? Disable the ones not being used?
(2) IPX protocol is not installed for the NIC you are trying to use?
Greg Kiser
Host Engineering, Inc.
Created Date: July 31,2007
Created by: DCLittlejohn
I spoke to AB Tech Support, and found out that the RADES modem does not support IPX. I am going to have to use the UDP protocol. I plan on trying this later today. I'll post my results as soon as I complete the testing. I am hoping the UDP will work
Created Date: July 30,2007
Created by: DCLittlejohn
Hopefully someone here will know the answer to this one.
I am using an Allen-Bradley (ZYPCOM manufactured) branded ethernet modem. AB part number 9300-RADES.
I have it configured and can connect. When I ping the IP address of the H2-ECOM for my DL-260 PLC, I get a reply, but when I try to connect to the PLC or look at the ECOM in Net Edit 3, I cannot. Net Edit 3 gives me an "Error 10051 searching for devices "
If I connect directly to an Ethernet port on the modem, I can connect and communitcate with the PLC via the ECOM module, so I know that via Ethernet the connection is good. I also am using the same modem connection to communitcate with a Eurotherm 2704 controller.
I suspect my trouble has something to do with the IPX protocol or similar, but I have not yet been able to pinpoint it.