Communicate With OPC Server
I am Using the PLC of Unitronics they have there OPC server called uniOPC sever i need to communication the OPC server using DSC what are the steps to communication.I am new with Labview.
How Do I Connect to an OPC Server Using DataSocket?
Similar Messages
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Jabber for Mac 9.2.1 Cannot communicate with the server
Hi All,
I'm using Webex and the Jabber for Mac 9.2.1 client that was automatically pushed. I see "Cannot communicate with the server" when I attempt to login.
The same credentials work correctly when using the 8.6.5 client version. I've attached the problem report file.
I would appreciate some guidance on what I need to do to get this to work.
Cheers,
SteveWe've seen this with a few of our users as well. All started noticing having issues Friday morning. As this is a hosted service for us via webex we had our engineers call in to Jabber support. Cisco performed a modification to their account and they were able to connect again. No SRV records were messed with.
***EDIT*** - This appears to have been caused by a certificate issue. The Trusted Root Certificate for QuoVadis expired and was not renewed on some machines.
Go here: https://www.quovadisglobal.com/QVRepository/DownloadRootsAndCRL.aspx
Install the Cert for : QuoVadis Root CA2 (in windows, download as DER>right click file>install)
Jabber should connect now. The issue was in SSL validation with the appropriate hosted servers. -
A network error occurred while trying to communicate with the server.
Hello All,
I am getting some new error messages when opening the server app on my Mac Mini server running OS X 10.8.2 and Server 2.2.1. First I get a message that says "A network error occurred while trying to communicate with the server." and then after trying to open some of the service panes, I get additional errors that say "Multiple errors occurred on the server while processing commands." The services don't load and I just see "Error Reading Settings" in the server app.
I started to get these errors when I added a new website to the server. All the services are working fine but I cannot access them in the server app.
In console I'm seeing these errors when I try to access various services:
2/24/13 8:02:12.692 PM Server[956]: Error: The server '10.0.1.150' reported an error while processing a command of type: 'readSettings' in plug-in: 'servermgr_dns'. Error: Error Domain=XSActionErrorDomain Code=499 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “10.0.1.150” which could put your confidential information at risk." UserInfo=0x7f8c4003a760 {NSLocalizedDescription=The certificate for this server is invalid. You might be connecting to a server that is pretending to be “10.0.1.150” which could put your confidential information at risk., originalError=Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “10.0.1.150” which could put your confidential information at risk." UserInfo=0x7f8c3f547db0 {NSURLErrorFailingURLPeerTrustErrorKey=<SecTrust 0x7f8c40599080 [0x7fff7711ffd0]>, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, NSUnderlyingError=0x7f8c3d58c0b0 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “10.0.1.150” which could put your confidential information at risk.", NSErrorPeerCertificateChainKey=(
"<SecCertificate 0x7f8c3f6747e0 [0x7fff7711ffd0]>"
), NSLocalizedDescription=The certificate for this server is invalid. You might be connecting to a server that is pretending to be “10.0.1.150” which could put your confidential information at risk., NSErrorFailingURLKey=https://10.0.1.150:311/commands/servermgr_dns, NSErrorFailingURLStringKey=https://10.0.1.150:311/commands/servermgr_dns, NSErrorClientCertificateStateKey=0}}
I have already restarted the server and used terminal to stop and start postgres. Any more thoughts on how to repair this?Just as I had suspected, the whole GUI crashed because of certificate problems. After two and a half hours with enterprise support, it turns out the com.apple.servermgrd certificate in the server keychain had become corrupt.
We determined this by typing https://127.0.0.1:311 into Safari and we could see all the server modules and interact with them through the web interface. All the services were working properly as well so we knew that it was just the Server.app GUI that simply couldn't read settings that was causing the problem.
So, first we closed the server app. Went into /var/servermgrd and deleted all the files from this folder. Then, in Keychain, deleted the com.apple.servermgrd certificate. Did a search for com.apple.servermgrd in Keychain and deleted everything else that came up for it.
Then restarted the server. Now the server app was able to properly connect to the services in the background and read them properly. This was the jist of the troubleshooting that solved the problem. It also seems like DNS is causing problems because that is the only service that will not read right but is functioning properly in the background.
I will post an update once Apple figures out what is wrong with DNS. Hope this helps anybody else having these problems. -
AIR doesn't communicate with my server - PHP issue
Hello,
So I have made an AIR application where the file communicates with a PHP file in order to display data.
I have WAMP installed on my computer, and the application works when I test locally using WAMP but if I upload the php on an online server(I tried on two of my servers) and run the AIR application it seems that it doesn't communicate with the server so no data are displayed.
var url:URLRequest = new URLRequest("http://www.test.com/test.php")
This is how I call for the php on AS3, like shown above.
Any suggestions?
The php file gives no errors when I browse it online so, I suppose there something else going on?There are no errors, on either the php files stored online neither the flash swf.
The only file scalled from an online server are the PHP.
I suppose I don't need to pack these PHP when publishing the air file, since they need to be called from an online server?
Very tricky since there are no errors, I would appreciate any help since this is an urgent project.
//EDIT:
So I just removed the http:// from the urlrequest to the site that the PHP is stored and I get this IO error:
Error #2044: Unhandled ioError:. text=Error #2032: Stream Error. URL: app:/test.com/test.php
at my_fla::test_1/setPHP()[my_fla.test_1::frame1:38]
Notice the app:/ ? why is it there? Could it be the issue? I am not sure, but if you link to a local file, like "test.php" it works, but when adding a URL it doesn't... -
We are getting the below error when we see in Crawl logs
"The crawler could not communicate with the server. Check that the server is available and that the firewall access is configured correctly. If the repository was temporarily unavailable, an incremental crawl will fix this error."
This is happening in FAST search.
Here I can see soke of the logs related to this search crawl.
Could anyone please help on this?
web application 'http://xvy/' doesn't use search application 'FAST Query SSA', skipping it.
ABC\sp_search' on web application 'http://xvy/'. 2d7dba01-3d2e-4903-b59f-9a8601627bcd
07/30/2014 01:30:46.65 OWSTIMER.EXE (0x28DC) 0x1BC0 SharePoint Server Search Administration
dl2m Verbose Search application 'Search Service Application 1': Skipping web application '48ed7882-9f70-424e-bf72-e3c9f5340b97' because its outbound url 'http://ebc:30347' was automatically added once.
Ensure full read access to the indexing account 'ABC\sp_search' on web application 'http://nvcp/'. 85041609-d618-4132-ac8e-195a910d99a0
07/30/2014 01:31:46.53 OWSTIMER.EXE (0x28DC) 0x05F4 SharePoint Server Search Administration
dl2m Verbose Search application 'FAST Query SSA': Skipping web application '57718ea1-8cb5-4adc-abd2-9e55415e5791' because its outbound url 'http://nvcp' was automatically added once. 85041609-d618-4132-ac8e-195a910d99a0
07/30/2014 01:31:46.53 OWSTIMER.EXE (0x28DC) 0x05F4 SharePoint Server Search Administration
dl2n Verbose Search application 'FAST Query SSA': Adding start address 'http://nvcp' for web application '57718ea1-8cb5-4adc-abd2-9e55415e5791' to list of valid start addresses. 85041609-d618-4132-ac8e-195a910d99a0
07/30/2014 01:31:46.53 OWSTIMER.EXE (0x28DC) 0x05F4 SharePoint Server Search Administration
dmb6 Verbose Ensure full read access to the indexing account 'ABc\sp_search' on web application 'http://nvcp'ext/'. 85041609-d618-4132-ac8e-195a910d99a0
07/30/2014 01:31:46.53 OWSTIMER.EXE (0x28DC) 0x05F4 SharePoint Server Search Administration
dl2m Verbose Search application 'FAST Query SSA': Skipping web application '64d562a1-535e-4917-8979-88840e2a67fe' because its outbound url 'http://nvcp'ext' was automatically added once. 85041609-d618-4132-ac8e-195a910d99a0
07/30/2014 01:31:46.53 OWSTIMER.EXE (0x28DC) 0x05F4 SharePoint Server Search Administration
dl2n Verbose Search application 'FAST Query SSA': Adding start address 'http://nvcpext' for web application '64d562a1-535e-4917-8979-88840e2a67fe' to list of valid start addresses. 85041609-d618-4132-ac8e-195a910d99a0
07/30/2014 01:31:46.53 OWSTIMER.EXE (0x28DC) 0x05F4 SharePoint Server Search Administration
dmb6 Verbose Ensure full read access to the indexing account 'ABC\sp_search' on web application 'http://nvcpnew/'. 85041609-d618-4132-ac8e-195a910d99a0
executing SQL query {? = call dbo.proc_MSS_PropagationIndexerGetReadyQueryComponents} [propdatabase.cxx:70] d:\office\source\search\native\ytrip\tripoli\propagation\propdatabase.cxx
07/30/2014 01:32:04.31 mssearch.exe (0x0588) 0x1DE4 SharePoint Server Search Propagation Manager
e3o3 Verbose executing SQL query {? = call dbo.proc_MSS_PropagationIndexerGetReadyQueryComponents} [propdatabase.cxx:70] d:\office\source\search\native\ytrip\tripoli\propagation\propdatabase.cxx
07/30/2014 01:32:04.68 mssdmn.exe (0x15CC) 0x1060 SharePoint Server Search HTTP Protocol
Handler du4i 0x29E4 SharePoint Server Search HTTP
Protocol Handler du4i Verbose CHttpAccessorHelper::InitRequestInternal - opening request for '/robots.txt'. [httpacchelper.cxx:353] d:\office\source\search\native\gather\protocols\http\httpacchelper.cxx
07/30/2014 01:32:04.70 mssdmn.exe (0x15CC) 0x29E4 SharePoint Server Search HTTP Protocol
Handler du54 High CHttpAccessorHelper::InitRequestInternal - unexpected status (503) on request for 'http://ppecpnew/robots.txt' Authentication 0. [httpacchelper.cxx:703]
d:\office\source\search\native\gather\protocols\http\httpacchelper.cxx
07/30/2014 01:32:04.70 mssearch.exe (0x0588) 0x130C SharePoint Server Search Gatherer
cd11 Warning The start address http://nvcp'/sites/quipme cannot be crawled. Context: Application 'FAST_Content_SSA', Catalog 'Portal_Content' Details:
The crawler could not communicate with the server. Check that the server is available and that the firewall access is configured correctly. If the repository was temporarily unavailable, an incremental crawl will fix this error. (0x80041200)
07/30/2014 01:32:04.70 mssdmn.exe (0x15CC) 0x104C SharePoint Server Search HTTP Protocol
Handler du4i Verbose CHttpAccessorHelper::InitRequestInternal - opening request for '/robots.txt'. [httpacchelper.cxx:353] d:\office\source\search\native\gather\protocols\http\httpacchelper.cxx
07/30/2014 01:32:04.70 mssdmn.exe (0x15CC) 0x104C SharePoint Server Search HTTP Protocol
Handler du54 High
07/30/2014 01:32:04.70 mssearch.exe (0x0588) 0x2948 SharePoint Server Search Gatherer
cd11 Warning The start address
http://nvcp'/sites/MDPPubng cannot be crawled. Context: Application 'FAST_Content_SSA', Catalog 'Portal_Content' Details: The crawler could not communicate with the server. Check that the server is
available and that the firewall access is configured correctly. If the repository was temporarily unavailable, an incremental crawl will fix this error. (0x80041200)
CHttpProbeHelper::ProbeServer: InitRequest failed for 'http://ppecpnew/_vti_bin/sitedata.asmx'. Return error to caller, hr=80041200 [stscommon.cxx:490] d:\office\source\search\native\gather\protocols\common\stscommon.cxx
07/30/2014 01:32:26.06 mssdmn.exe (0x15CC) 0x193C SharePoint Server Search PHSts
dvg0 High STS3::COWSServer::InitializeClaimsCookie: Probing url 'http://pncvr' failed. Return error to caller, hr=80041200 [sts3util.cxx:1332] d:\office\source\search\native\gather\protocols\sts3\sts3util.cxx
07/30/2014 01:32:26.06 mssdmn.exe (0x15CC) 0x193C SharePoint Server Search PHSts
en0e High CSTS3Accessor::InitURLType: Return error to caller, hr=80041200 [sts3acc.cxx:2214] d:\office\source\search\native\gather\protocols\sts3\sts3acc.cxx
07/30/2014 01:32:26.06 mssdmn.exe (0x15CC) 0x193C SharePoint Server Search PHSts
dv3p High CSTS3Accessor::GetServer fails, Url sts4://pnvpr/siteurl=sites/product/siteid={7ebfb072-08a8-4df7-8f74-e06730325d9a}/weburl=/webid={bd7ae724-1256-4b26-9633-416447d6bc5c}, hr=80041200 [sts3acc.cxx:185]
d:\office\source\search\native\gather\protocols\sts3\sts3acc.cxx
07/30/2014 01:32:26.06 mssdmn.exe (0x15CC) 0x193C SharePoint Server Search PHSts
dvb1 High CSTS3Accessor::Init fails, Url sts4:/mngbv/siteurl=sites/product/siteid={7ebfb072-08a8-4df7-8f74-e06730325d9a}/weburl=/webid={bd7ae724-1256-4b26-9633-416447d6bc5c}, hr=80041200 [sts3handler.cxx:312]
d:\office\source\search\native\gather\protocols\sts3\sts3handler.cxx
07/30/2014 01:32:26.06 mssdmn.exe (0x15CC) 0x16FC SharePoint Server Search HTTP Protocol
Handler du2z Verbose CHttpProbeHelper::ProbeServer: Probing server with url 'http://pnvpr/_vti_bin/sitedata.asmx'. [stscommon.cxx:476] d:\office\source\search\native\gather\protocols\common\stscommon.cxx
07/30/2014 01:32:26.08 mssdmn.exe (0x15CC) 0x193C SharePoint Server Search PHSts
dvb2 High CSTS3Handler::CreateAccessorExD: Return error to caller, hr=80041200 [sts3handler.cxx:330] d:\office\source\search\native\gather\protocols\sts3\sts3handler.cxx
07/30/2014 01:32:26.08 mssdmn.exe (0x15CC) 0x16FC SharePoint Server Search HTTP Protocol
Handler du4i Verbose CHttpAccessorHelper::InitRequestInternal - opening request for '/_vti_bin/sitedata.asmx'. [httpacchelper.cxx:353] d:\office\source\search\native\gather\protocols\http\httpacchelper.cxx
earch application 'FAST Query SSA': Adding start address 'http://mnvfgext' for web application '64d562a1-535e-4917-8979-88840e2a67fe' to list of valid start addresses. a6b7948a-dc16-419d-b58a-0ee798a0bb9c
07/30/2014 01:32:46.53 OWSTIMER.EXE (0x28DC) 0x1444 SharePoint Server Search Administration
dmb6 Verbose Ensure full read access to the indexing account 'ABC\sp_search' on web application 'http://nvpr/'. a6b7948a-dc16-419d-b58a-0ee798a0bb9c
07/30/2014 01:32:46.53 OWSTIMER.EXE (0x28DC) 0x1444 SharePoint Server Search Administration
dl2m Verbose Search application 'FAST Query SSA': Skipping web application 'cea7b67b-fd5f-4c9a-a300-64a7d7ca3093' because its outbound url 'http://pnvpr' was automatically added once. a6b7948a-dc16-419d-b58a-0ee798a0bb9c
07/30/2014 01:32:46.53 OWSTIMER.EXE (0x28DC) 0x1444 SharePoint Server Search Administration
dl2n Verbose Search application 'FAST Query SSA': Adding start address 'http://pnvpr' for web application 'cea7b67b-fd5f-4c9a-a300-64a7d7ca3093' to list of valid start addresses. a6b7948a-dc16-419d-b58a-0ee798a0bb9c
07/30/2014 01:32:46.53 OWSTIMER.EXE (0x28DC) 0x1444 SharePoint Server Search Administration
dl2k Verbose web application 'http://abcrsp/' doesn't use search application 'FAST Query SSA', skipping it. a6b7948a-dc16-419d-b58a-0ee798a0bb9c
07/30/2014 01:32:46.53 OWSTIMER.EXE (0x28DC) 0x1444 SharePoint Server Search Administration
dl2k Verbose web application 'http://excb/' doesn't use search application 'FAST Query SSA', ski
Anil LokaHi,
According to your post, my understanding is that you got error when communicating to the server.
This happens when crawler is not able to connect to the server. Make sure server name is correct. Couple of steps to troubleshoot it
You should be able to ping the server from the server having crawl component. Make sure there is an entry for the server in the host file under c:\Windows\System32\drivers\etc folder.
Ping <servername>
2. You should be able to connect to the server using telnet command
Telnet< servername> <port number>
More information:
Troubleshooting of FAST Search Configuration
If the issue still exists, you can delete the old search application and recreate from the beginning.
You can also reset the index and do a full crawl after.
Here is a similar thread for your reference:
http://social.technet.microsoft.com/Forums/en-US/f3c61b53-304a-4c2a-a370-d0e573219d1d/an-unrecognized-http-response-was-received-when-attempting-to-crawl-this-item?forum=sharepointadminprevious
Best Regards,
Linda Li
Linda Li
TechNet Community Support -
i am getting the error message "cannot communicate with the server" when i try to sign into my apple account on my ipad - any ideas???
Welcome to the Apple Community.
The following article(s) may help you.
Photo Stream ToU's -
I have been trying to fix my facebook setting but I keep getting an error message after inputting my password. "could not communicate with the server" keeps popping up. [DELETE ACCOUNT] doesn't work either. It doesn't delete my facebook account at all. What else can I do?
THIS HAS WORKED
Apple Support Communities
Re: IOS 7 Apple Settings Facebook Error
created by Pegboarder in Using iPad - View the full discussion
Go into settings/privacy/Facebook and disable the button.
Open your Facebook app and login.
Once logged in go back to that button and enable.
You may have to re-enter your password but the error will be gone.
Good luck.
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Hello!!!how can I control an omron plc (sysmac cqm1)with an OPC server?I want to adquire a signal controlling its amplitude and frecuency.How can it be done with OPC server?I already have the NI CD of OPC drivers.Thank you
Hola Jose David, que OPC estas utilizando?, Si tienes comunicación entre tu computadora y PLC pero falla la comunicación entre el OPC y el PLC? La configuración y direcciones entre los dos es correcta? La comunicación es por cable serial?
Espero tus respuestas
Saludos
Benjamin C
Senior Systems Engineer // CLA // CLED // CTD -
I have created Web service VI ("Prikaz insolacije.vi") which has two input string terminals (FROM / TO) for dates and two output terminals for data (1-D array) collected from database (MS SQL server). This VI communicates with database using functions from database palette with appropriate DSN and SQL query. There are two tables with two data columns (Time and Insolation) in Database.
This VI works when you run it in Labview 2010, but when I used it as sub VI in UI builder it doesn't return any data.
Could you please help me find a solution. Is it possible to communicate with SQL server database this way or there is another way?
There are two attachmet files: Image of .vix file in UI builder and .vi file ("Prikaz insolacije.vi")
Please help me ASAP!
Thanks,
Ivan
Solved!
Go to Solution.
Attachments:
vix file in UI builder.png 213 KB
Prikaz insolacije.vi 35 KBStatus is False and source string is empty. It behaves like there is no code in VI.
I tried to access web service directly using following URL:
http://localhost:8080/WSPPSunce/Prikaz_insolacije/2009-11-05/2009-11-01
and it doesn' t work. It returns zeros.
The response is:
<Response><Terminal><Name>Insolacija</Name><Value><DimSize>0</DimSize></Value></Terminal><Terminal><Name>Vrijeme</Name><Value><DimSize>0</DimSize></Value></Terminal></Response> -
The crawler could not communicate with the server on SharePoint 2010
Dear Friends,
we have two tier farm application and web is running in one server , and other one is database server, search crawling is not working ,My search service application log giving these below errors , Can you please suggest me how to fix these
errors and how to make the search crawling with out errors.This is very urgent friends, because I have these issues on production server. kindly help me to fix these issues as soon as possible.
The crawler could not communicate with the server. Check that the server is available and that the firewall access is configured correctly. If the repository was temporarily unavailable, an incremental crawl will fix this error.
An unrecognized HTTP response was received when attempting to crawl this item. Verify whether the item can be accessed using your browser.
Please see the recent crawl history below, it is listed 124,062 24 errors.
Crawl started
Crawl completed
Crawl duration
Type
Successes
Warnings
Errors
Top Level Errors
Deletes
Not Modified
Security Updates
10/19/2014 11:55 PM
10/20/2014 12:10 AM
00:15:27
Incremental
0
0
124,062
24
0
1
0
10/19/2014 10:55 PM
10/19/2014 11:11 PM
00:16:26
Full
1
0
124,062
24
valmikithanks gain noddy, I found the actual problem now . It is crawling the site collection . but is not crawling the sub site. How to include sub site to crawl , I found this solution in Google , one suggested to do this but did not work out.
Can you please let me know how to include sub site to crawl its contents .
The solution to this is frustratingly simple...
At the root of the site, go to Site Actions >> Site Settings and choose Search and Offline Availability under Site Administration.
Set the page indexing behavior to “Always index all Web Parts on this site”.
Save and run a full crawl.
valmiki -
How does URLRequest communicate with a server?
Hi
I've been using URLRequest in my AIR desktop app to deal with server communications. I understand how to make it work, but I'm curious how it works under the hood - ie what header info etc is sent?
I'm setting up an api for another developer to communicate with my server using a non-Flash app, and I'm having difficulty understanding what he needs, as I am used to having my php script first just look for an $_POST variables to deal with - so I just gave him a list of what POST values to send. But he needs more info to send data - here's what he's asking...
url including command type
headers
blank line
body (json string)
eg
https://www.mysite.com POST /api/account.php?command=login HTTP/1.1
Content-Type: application/json
Connection: close
{"pass":"superhardpass","token":"","appID":"myApp","user":"billClinton","ver":"2.01","Coll ection_ID":"1"}
He's asking me...
"what i need is a list of:
url string
list of header values you expect
body string"
What does Flash usually send?
Thanks guys
[Moved here from Flash Pro forums]
Message was edited by: siniousIt sounds like he has only worked with RESTful interfaces and doesn't remember when the world mostly worked with GET and POST. RESTful interfaces also support PUT, DELETE, and I think some other thing I forget at the moment. Mainly, he just needs to educate himself about how basic form/html sends work and have worked since like the 90's, but here are some things that might help you and him speak to each other.
Flash isn't really able to use anything but GET and POST, so basically it sounds like you just need to tell him "POST" for command type.
Flash can't send headers, so those aren't applicable. If he wants to use an encoding type, he can send "multipart/form-data", though I don't think the back-end cares one way or another about that.
Tell him to send just individual POST variables, and that you're not looking for JSON or anything fancy like that.
If you're not trying to leverage existing back-end code and want to meet him halfway, do a web search on writing RESTful web services in your language of choice. But honestly this is basic stuff he should have learned BEFORE he learned to just call web services. You may also find that the Dreamweaver forum can give you better answers about how to learn to write web services if that's what you want to do. -
Hi everyone,
I'm running UCCX 8.01 + CUCM 7.1+ Cisco 7942 just for learning purpose. After creating the Outbound Campaign and imported the Contact List the call is received by the agent (call is state is received as Offering) but after press the Accept, Reject or any othe action button is received the error:
Error Unable to communicate with Enterprise Server. outbound Option not available (attached to post).
What does this mean?
Regards
Please rate all useful posts
Favor calificar todos las respuestas útiles.
LinkedIn Profile: do.linkedin.com/in/leosalcie
MDGDP, CCNA, CCNA Voice, CCNP Voice CertifiedAny idea?
Please rate all useful posts
Favor calificar todos las respuestas útiles.
LinkedIn Profile: do.linkedin.com/in/leosalcie
MDGDP, CCNA, CCNA Voice, CCNP Voice Certified -
Paanu ba idelete ung Facebook sa settings? Kahit anong enter ko ng password ang Lumalabas ay could not communicate with the server.inan install ko na sya,pero andun prin sya sa settings.sa google chrome pa aq pumupunta para LNG maka log in.thanks.
-
The crawler could not communicate with the server.
valmiki
Hi,
According to your post, my understanding is that you get an error when communicating to the server.
1. This happens when crawler is not able to connect to the server. Make sure server name is correct and your crawl account should have the Full Read permission on the User Policy at the Web Application level. It should not have any specific
permission on any site collection.
Couple of steps to troubleshoot it:
a. You should be able to ping the server from the server having crawl component. Make sure there is an entry for the server in the host file under c:\Windows\System32\drivers\etc folder.
Ping <servername>
b. You should be able to connect to the server using telnet command
Telnet< servername> <port number>
https://social.technet.microsoft.com/Forums/en-US/01b6cdda-ca38-46c1-be07-2e89eb91271f/the-crawler-could-not-communicate-with-the-server-check-that-the-server-is-available-and-that-the?forum=sharepointsearchprevious
2. Can you browse to the WebApp from the server that is performing the Crawl? The issue is usually the most typical is the LoopBackCheck.
Click Start, click Run, type regedit, and then click OK.
In Registry Editor, locate and then click the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0
Right-click MSV1_0, point to New, and then click Multi-String Value.
Type BackConnectionHostNames, and then press ENTER.
Right-click BackConnectionHostNames, and then click Modify.
In the Value data box, type the host name or the host names for the sites that are on the local computer, and then click OK.
Quit Registry Editor, and then restart the IISAdmin service.
https://social.technet.microsoft.com/Forums/en-US/f378c45f-fa8b-48f3-88bb-739f3cd27830/the-crawler-could-not-communicate-with-the-server-check-that-the-server-is-available-and-that-the?forum=sharepointadminprevious
3. Checked WinProxy to see configured proxy:
C:\Windows\system32>NetSH WinHTTP Show Proxy
Run NetSH WinHTTP Reset Proxy
Restart server and test again.
https://social.technet.microsoft.com/Forums/en-US/1baa6fd5-acc7-4cda-b7cb-7fa86aa8101f/the-crawler-could-not-communicate-with-the-server?forum=sharepointsearchprevious
4. The web.config file of the crawled web application contains an error.
The target site collection contains a web part error for instance on the default.aspx.
Also check the solution are not deployed correctly.Central Administration -> Solution Management (Manage Farm Solutions).
https://sharepointsriram.wordpress.com/2011/12/10/the-crawler-could-not-communicate-with-the-server-check-that-the-server-is-available-and-that-the-firewall-access-is-configured-correctly/
If the issue still exists, you can try to delete the old search application and recreate from the beginning.
You can also reset the index and do a full crawl after.
For more information about this similar issue, you can refer to:
http://sharepointroot.com/2012/03/16/sharepoint-search-the-crawler-could-not-communicate-with-the-server/
http://www.sharepointed.com/2013/08/13/the-crawler-could-not-communicate-with-the-server-check-that-the-server-is-available-and-that-the-firewall-access-is-configured-correctly/
http://www.information-worker.nl/2011/01/11/the-crawler-could-not-communicate-with-the-server/
https://social.technet.microsoft.com/Forums/en-US/0e7ffd07-c584-4767-a2bc-ce3a014255c6/the-crawler-could-not-communicate-with-the-server-check-that-the-server-is-available-and-that-the?forum=sharepointadminprevious
Best Regards,
Yumi Fu -
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