<div dir="ltr"><div><div><div><div><div>Pardon for the noob question, but I have Etherlab 1.5.2 set up on a Fedora 19 system, and have a strange issue with reserving a master instance.<br><br></div>To start with, I *should* have read/write permission on the device:[dclark@bukhansan Debug_ecat]$ ls -l /dev/EtherCAT0<br>
crw-rw-r--. 1 root users 249, 0 Jan 1 13:33 /dev/EtherCAT0<br><br></div>But when I wrote the simplest possible application to just request and then release the master to check I had all the build and link options set correctly, I got the following error:<br>
<br>[dclark@bukhansan Debug_ecat]$ ./TestServo <br>Failed to open /dev/EtherCAT0: Permission denied<br>FATAL: couldn't request a master instance.<br><br></div>Running it as root:<br>[root@bukhansan Debug_ecat]# ./TestServo <br>
Master instance created ok<br>Releasing master...done!<br><br></div>Any ideas why this would be? Thanks in advance!<br><br></div>Dusty Clark<br>MMT Observatory<br></div>