Is it really could open the pipe using krl_fopen in KSS8.3.22 ?

[davidrobot]

Hi

SWRITE (FILENAME[], STAT, OFFSET, "%s", "\\\\.\\pipe\\kukanet")
CWRITE($FCT_CALL, STAT, MODE, "krl_fopen", FILENAME[], "a", HANDLE)

when run the CWRITE step, it will return

{STATE_T: 
RET1 #CMD_ABORT,
**MSG_NO -16,**
MSG_TYPE "D",
HITS 0,
LENGTH 0
}

the code -16:
-16 At least one function parameter string contains invalid characters, e.g. \ * ? " < > : , = ; ] [ ) ( } {, for paths, etc.

[dddomodossola]

Hello @davidrobot , sure you can open a pipe, but the pipe have to be already opened by the other side. However the communication library doesn't work, I hadn't the time to do enough tests.

[davidrobot]

Hi.
I am sure the pipe is opened, I tested the pipe with Putty , the pipe works.
I think the problem is that it said the krl_fopen() can not open the path includes "\", but the pipe path includes ones.

[dddomodossola]

I was able to connect (open) the pipe from both sides, but unable to exchange data. Unfortunately I lost the corrected code because I have no access to the test robot I used. However I can remember there was something wrong in the code. Some tips to try:

1. Increase the FILENAME size;
2. Fill FILENAME with zeros before writing the filename content;
3. Found some code elsewhere in my PC, try something like this "SWRITE (FILENAME[], STAT, OFFSET, "%s", "/kukanet/kukanet")";
4. Found also a test to mount a network pipe "CWRITE($FCT_CALL, Stat, Mode, "krl_mount", "/kukanet","//192.168.2.106/pipe", "Everyone", "001F16DC43536C6D4E77DA00A00D6BE079")";

I hope you will be able to solve the problem! Would you like to work on this repo? I can share administrative priviledges with you.

[mgadaleta87]

Hello,
any update here?
I created a pipe on the Windows side of a KUKA KRC4 but I didn't find a way for connecting to it.