$ ./el2595-1
Configuring PDOs...
Activating master...
Warning: Failed to set priority: Permission denied
installing signal handler 
Starting timer...
Started sig_alarms 0 user_alarms 0
.3 slave(s).
AL states: 0x02.
Link is up.
Slave1: State 0x02.
Slave1: online.
Slave1: Not operational.
...................................................................................................sig/user = 1.000000
....................................................................................................sig/user = 1.000000
....................................................................................................sig/user = 1.000000
^C