Closed lemonfunk closed 4 years ago
If I recall correctly the last two bytes of the message are parsed as error class and error code by wireshark. I did not yet find a list of error codes and meanings or I might have added parsing them and providing more usefull messages. Maybe wireshark is able to provide a text error message. I had a problem where I thought the configuration was correct, but I forgot to push the hardware configuration to the PLC.
Did you check the allow "PUT/GET..." part of the access configuration?
Yes Put/Get is enabled. I'm not sure if some kind of firewall / network issue could be a reason? Siemens TIA works fine between the computer and S7. I have a KTP400-HMI connected to the SPS (if this has any influence)
I have to admitt that since the last version 0.6.0 (?) I also get this message very often now on different readings from PLCs (all S7-1500). I mostly read classes or words. With the version before (0.4.0) that did not occure.
"S7.Net.PlcException: Received 15 bytes: '32-03-00-00-00-0A-00-02-00-01-00-00-05-01-FF', expected 19 bytes. ---> S7.Net.PlcException: Received 15 bytes: '32-03-00-00-00-0A-00-02-00-01-00-00-05-01-FF', expected 19 bytes. bei S7.Net.Plc.AssertReadResponse(Byte[] s7Data, Int32 dataLength) bei S7.Net.Plc.ReadBytesWithSingleRequest(DataType dataType, Int32 db, Int32 startByteAdr, Int32 count)"
Btw: it is good to see that some people started to push the development of this great library! Thank you all for efforts
Shame on me! BTW: 0.4 gives an array index error instead of the above
BUT: It seems it really was a problem with the PUT/GET option? It was activated, shown as active during the online connection with TIA and i also updated the code several times, but maybe the put/get status was'nt yet pushed to the SPS?
I just tried to activate the HTTP server to check if the SPS gehts this change and now it works (even if deactivated webserver now)
Thank you! So there will be an update to the library sometime today?
No in my case it seems that the problem was a configuratuion issue of the S7 and not a s7.net+ issue
In my case the problem seems to be something other. The messages just occure with the newer version of the library. PUT/GET-permission is active since ever...that can not be the problem
@lemonfunk My guess is you did transfer the software to the PLC but somehow missed to transfer the hardware to the PLC. I had a simliar error and took a few hours of searching to find this problem. In my case there were some surrounding conditions which prevented the transfer of the hardware.
@FalcoGoodbody can you open a new issue and also test with Version 0.5.0? Could you also describe the value you are trying to read in more detail?
I will do, thanks
Hi there, i'm just trying to read DB variables using S7.Net+ (updated vo V0.6) from an S7-1200
The first problem i had it the known issue that the "isavailable" request seems to close the socket connection. (is there a plan to fix this?)
By avoiding "isavailable" i came a bit closer to the finish line (BTW: optimization is of, access granted) Now i get following exception when i try to perform a read
var result = (bool)SPS.Read("DB2.DBX72.0");
results in: S7.Net.PlcException: "Received 12 bytes: '32-02-00-00-00-00-00-00-00-00-81-04', expected 19 bytes."