Hello everyone, I am facing a connectivity issue between a laptop (Windows 7) and a Siemens S7 1214 PLC over Ethernet. Let me explain the situation a bit more, I need to program my PLC, which is blank. To do this, I connected my PC directly to the PLC, and Windows detects an unknown network. I went to the Network and Sharing Center, and the diagram indicates that the connection is not reaching the network. I then performed a ping test to verify, first using automatic IP and then with the fixed IP recommended by Siemens (which is 192.168.0.99), and in both cases, the result is the same: "unable to reach the destination host". I find myself in a deadlock, and since this is a PLC that controls safety devices, I cannot afford to spend 2 weeks looking for the solution alone. That's why I am reaching out to your knowledge and kindness to help me a little. Thank you all for your attention sfx159 Configuration: Windows 7 / Chrome 23.0.1271.97 / Siemens S7 1214

unable to reach the destination host : CCM

Réponse 1 / 10

sfx159 Posted messages 39 Status Membre 11

Hi, first of all, thank you for taking some time to respond to me.

I've already tried disabling the firewall, disabling and re-enabling my network card (just in case).
The result remains the same:
"unable to reach the destination host."

The worst part of this story is that when I make my ping request, I see the rx/tx LED going crazy, proof that the device is indeed receiving something :/

I have screenshots of my ipconfig but I don't see how to send them to you since I'm currently in Congo and the connection here is low bandwidth (very low bandwidth, about an hour to upload a photo).

Réponse 2 / 10

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Hi

How is the PC connected to the PLC?

Directly? Straight cable? Crossed?

Via a switch?

What is the TCP/IP configuration of the PLC? IP? Subnet mask? Gateway? DNS?

What is the TCP/IP configuration of your PC? IP? Subnet mask? Gateway? DNS?

Réponse 3 / 10

choubaka Posted messages 5529 Registration date Status Modérateur Last intervention 2 113

I sometimes had problems too when the IPv6 protocol was enabled.

--
Chouba, Bibapeloula / My job is so secret that I don't even know what I'm doing.

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Hi

As I asked, we should first check how it's wired and what the respective IP configurations are.

sfx159 Posted messages 39 Status Membre 11

How can I disable IPv6?

Réponse 4 / 10

sfx159 Posted messages 39 Status Membre 11

hi kaumune

as mentioned in my post, I am using a direct ethernet cable to the controller (without a router, hub, or anything else)

the configuration of the controller (at least as indicated in the siemens manual):

IP address: 192.168.0.1
subnet mask: 255.255.255.0
no indication for gateway or DNS

the configuration of the PC (as recommended by siemens):

IP address: 192.168.0.99
subnet mask: 255.255.255.0
no indication for gateway or DNS

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Straight or crossover cable?

If straight, is one of the network cards mdi/mdix? (it does the crossover by itself)

When you say no indication for gateway and dns, does that mean it is blank?

sfx159 Posted messages 39 Status Membre 11

Sorry, I don't know about the cable, but my network card is an Atheros AR8161/8165 PCI-E Gigabit Ethernet Controller (NDIS 6.20). I assume it's recent enough to handle the cross-connect by itself.

And indeed, I left the gateway and DNS fields empty.

P.S. Thank you for your help.

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Don't you have a switch or a hub at hand to do the test or a crossover cable?

Have you disabled IPv6?

If you know how to configure TCP/IP settings, you know how to uncheck the IPv6 box in the network adapter properties.

sfx159 Posted messages 39 Status Membre 11

and no, and that's a shame, I am in Congo and my material resources are almost non-existent.

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

How do you connect to the net?

Have you disabled IPv6?

If you know how to configure TCP/IP settings, you know how to uncheck the IPv6 box in the network adapter properties.

Réponse 5 / 10

choubaka Posted messages 5529 Registration date Status Modérateur Last intervention 2 113

Hello

Try disabling the W7 firewall.

Chouba, Bibapeloula / My job is so secret that I don’t even know what I’m doing.

Réponse 6 / 10

sfx159 Posted messages 39 Status Membre 11

I just ran an ipconfig/all and I noticed that my DHCP is disabled. Does this have an impact? If so, how can I enable it on Windows Seven?

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Well no, on the contrary, it needs to be disabled since you are in direct connection without a DHCP server

Have you disabled IPv6?

If you know how to configure the TCP/IP settings, you know how to uncheck the IPv6 box in the network card properties

Otherwise, with the PC you are using to write here, how do you connect to the internet?

sfx159 Posted messages 39 Status Membre 11

To be precise, I work on a boat at the dock and I have to set my configuration to auto IP to connect in my office and reset all the parameters when I return on board (it's a hassle but I have no choice)

I will try to disable IPv6 and keep you updated.

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Apparently, your thing has a built-in web server, have you tried http://192.168.0.1?

sfx159 Posted messages 39 Status Membre 11

Well, I've just tried to disable IPv6, the problem persists; I'm attaching the important lines from my ipconfig:

C:\Windows\System32>ping 192.168.0.1

Sending a 'Ping' request to 192.168.0.1 with 32 bytes of data:
Reply from 192.168.0.99: Destination host unreachable.
Reply from 192.168.0.99: Destination host unreachable.
Reply from 192.168.0.99: Destination host unreachable.
Reply from 192.168.0.99: Destination host unreachable.

----------------------------------------------------------------------------------

C:\Windows\System32>ipconfig

Windows IP Configuration
Ethernet Adapter Local Area Connection:

Connection-specific DNS Suffix . . . :
IPv4 Address. . . . . . . . . . . . . .: 192.168.0.99
Subnet Mask. . . . . . . . . . . . . : 255.255.255.0
Default Gateway. . . . . . . . . . . . :

---------------------------------------------------------------------------------

C:\Windows\System32>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . : Binouz-PC
Primary DNS Suffix . . . . . . :
Node Type. . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . : No
WINS Proxy Enabled. . . . . . . : No

Ethernet Adapter Local Area Connection:

Connection-specific DNS Suffix . . . :
Description. . . . . . . . . . . . . . : Atheros AR8161/8165 PCI-E Gigabit Ethernet Controller (NDIS 6.20)
Physical Address . . . . . . . . . . : 30-85-A9-14-A9-7F
DHCP Enabled. . . . . . . . . . . . . . : No
Autoconfiguration Enabled. . . : Yes
IPv4 Address. . . . . . . . . . . . . .: 192.168.0.99(preferred)
Subnet Mask. . . . . . . . . . . . . : 255.255.255.0
Default Gateway. . . . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . . . . : Enabled

p.s.: I'm going to try http://192.168.0.1
Is it from my internet browser or do I ping from the command prompt?

sfx159 Posted messages 39 Status Membre 11

In fact, I wouldn't be surprised if my robot doesn't have a built-in web server because it usually operates autonomously (just itself and its touch panel).

Réponse 7 / 10

choubaka Posted messages 5529 Registration date Status Modérateur Last intervention 2 113

you can try....

arp -s 192.168.0.1 00-00-00-00-00-00

--
Chouba, Bibapeloula / My job is so secret that I don’t even know what I’m doing.

sfx159 Posted messages 39 Status Membre 11

the following 0 I suppose is the MAC address?
for the test should I leave the 0 or replace it with my automation's address?

choubaka Posted messages 5529 Registration date Status Modérateur Last intervention 2 113

put the correct MAC address of course

choubaka Posted messages 5529 Registration date Status Modérateur Last intervention 2 113

then retry the ping..

ping 192.168.0.1 -t

sfx159 Posted messages 39 Status Membre 11

Okay, I will give that a try, thank you. I will give you more information when I come back from the "mangement" as they say here ^^

I wish you a good meal and thank you again for your help.

Réponse 8 / 10

sfx159 Posted messages 39 Status Membre 11

Hello everyone,

As I said before, I went to try Choubaka's trick and here's what the command prompt gave me:

C:\Windows\System32>arp -s 192.168.0.1 00-1C-06-0C-AB-00

C:\Windows\System32>ping 192.168.0.1

Sending a 'Ping' request to 192.168.0.1 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.0.1:
Packets: sent = 4, received = 0, lost = 4 (100% loss),

C:\Windows\System32>ping 192.168.0.1 -t

Sending a 'Ping' request to 192.168.0.1 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.

In short, nothing very conclusive :(

I'm starting to wonder if I shouldn't program that automaton with a hammer.

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

If the PC is properly configured and the cable is good, the only non-verifiable element is the IP configuration of the controller.

Do you not have a button to reset the configuration of this controller?

In the documentation (page 11), there is mention of software to configure it (apparently starting with the MAC address), have you used it?

http://tinypic.com/images/goodbye.jpg

SOURCE

sfx159 Posted messages 39 Status Membre 11

Yes, of course, to enter the program into the controller, I have to use the TIA Portal software from Siemens.

But when I use the online tool of the software, it tells me that no subscriber is present on the network, that's why I started my diagnosis via the command prompt.

P.S. Since our last conversation, I have reinstalled my controller and reset all the connection parameters (the Siemens IP and the parameters you advised me on (thanks again)), but no change, the controller is not recognized by TIA Portal or by Windows.

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Did you click on "Update accessible subscribers"?

You didn't answer the question about resetting the automation.

sfx159 Posted messages 39 Status Membre 11

For the reset button, it's negative (I just dropped off the PLC to try with another one I had as a spare (same problem), I've turned it upside down and can't find the reset button) apparently you need to use an MC card but as I said I can't get one here.

I've tried all the options in the software including "Update accessible subscribers" but it doesn't find any subscribers.

I just found a utility on the Siemens website:

http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&objId=40725842&load=treecontent&lang=en&siteid=cseus&aktprim=0&objaction=csview&extranet=standard&viewreg=WW

It is used to change the IP address of my PLC without going through the TIA portal software, but I'm not very optimistic since if there’s no connection to the PLC, it won’t be able to change anything at all but I'll try anyway.
(the software is 55MB so it will take time with a download speed of 15KB/s)

Réponse 9 / 10

sfx159 Posted messages 39 Status Membre 11

I went all out, meaning I replaced my controller with a new one, changed the cable, switched PCs and operating systems (I went from Windows 7 to XP).

Result: no change.

I am still waiting for a response from Siemens and the company that installed the system.

I will inform you of the solution in case it can help someone else with the same problem and that you didn't do this for nothing.

Thank you for your help, but I'm throwing in the towel due to lack of time.

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

alright good luck

sfx159 Posted messages 39 Status Membre 11

Thank you, I will need it ^^"

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

I'm still uncertain about the straight/crossed cable thing

I know you don't have everything at hand

sfx159 Posted messages 39 Status Membre 11

Thank you for persisting, I appreciate it. What type of equipment can I find a crossover cable with? And how can I recognize it?

choubaka Posted messages 5529 Registration date Status Modérateur Last intervention 2 113

Désolé, je ne peux pas accéder à des liens externes.

Réponse 10 / 10

raou19f68

try to enable your DHCP, so it can give you an IP address, then restart your computer...

kaumune Posted messages 22594 Registration date Status Contributeur Last intervention 5 156

Which DHCP server?

choubaka Posted messages 5529 Registration date Status Modérateur Last intervention 2 113

I don’t think he read it all.. ;-)

Unable to reach the destination host

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