EIPScanner
EIPScanner copied to clipboard
nimbuscontrols
Communication with sick PLC gateway using EIPscanner
Hi,
I am pretty new with the EIPScanner stack and trying to use it to communicate with Sick Gateway (more specifically FX3-GEPR00000) which then is connected to the main PLC and some other blocks. The gateway is the main linking point where all the data can be fetched from. I have a EDS file but I am not sure how to use the same here with the stack. The FileObjectExample.cpp example in the source seems to be using some output stream for uploading eds file, but I couldn't get the idea how I can I use the provided eds file from the vendor with the stack. I tried to use the explicit/implicit example too but they fails to establish connection with an error of 'what : Resource temporarily unavailable'
I tried to dig dive more and enable the trace logs and found it actually establishes a TCP connection and then send some 24 bytes of data but does not get any reply from other side timesout and throws this error.
I am not sure the data sent here is some standard message of the TCP/IP stack but the gateway seems to not understand it. Here's the link for the eds file, any help is appreciated.
It seems like the Sick FX3 implements some custom protocol over TCP/IP. I wasn't able to find the EDS file you mentioned, but I did find this document, describing TCP/IP packet contents.
Note on page 7, port 9000 is mentioned. Without any further understanding of the device itself (I don't have one), since TCP/IP is mentioned, it seems like explicit messaging is implied.
EDS files are for implicit messaging, no? I don't know if and how you'd get the EDS file to work (or if you should, to get comms up and running). I haven't had the need to work with EDS files - only explicit messaging for now.
It turned out I was using wrong port for explicit messaging. As per standard the Ethernet/IP uses 44818 for explicit messaging. After changing the port the example code works as expected for explicit messages.