[etherlab-users] Slaves in PREOP state

[Jordi Blanch Carles]

Hello Wilhelm, here are your questions:

Master:
EtherCAT: Master driver devel unknown
EtherCAT: 1 master waiting for devices.
Intel(R) PRO/1000 Network Driver - version 7.3.21-k5-NAPI
Copyright (c) 1999-2006 Intel Corporation.
ec_e1000 0000:01:01.0: PCI->APIC IRQ transform: INT A -> IRQ 18
ec_e1000 0000:01:01.0: setting latency timer to 64
ec_e1000: 0000:01:01.0: e1000_probe: (PCI:33MHz:32-bit) 00:18:7d:00:e8:77
EtherCAT: Accepting device 00:18:7D:00:E8:77 for master 0.
EtherCAT 0: Starting EtherCAT-IDLE thread.
ec_e1000: ec0: e1000_probe: Intel(R) PRO/1000 Network Connection

kernel:
Linux rtai 2.6.34 #2 SMP Wed Aug 31 13:31:18 CEST 2011 i686 GNU/Linux

network:
01:01.0 Ethernet controller: Intel Corporation 82547GI Gigabit  
Ethernet Controller

slaves:
0  0:0  PREOP  +  EK1101 EtherCAT-Koppler (2A E-Bus, ID-Switch)
1  0:1  PREOP  +  EL4132 2Ch. Ana. Ausgang +/-10V, 16bit
2  0:2  PREOP  +  EL3102 2K. Ana. Eingang +/-10V, Diff.
3  0:3  PREOP  +  EL2004 4K. Dig. Ausgang 24V, 0.5A

Sampling time: 100 Hz -> 10ms

ethercat:
root at rtai:~/etherlabmaster/examples/mini# ethercat version
IgH EtherCAT master devel unknown <------------ Development version  
1.5 downloaded 1 month ago.

We have also tried connecting only the EL2004 Digital Output module  
and connecting only the EL4132 Analog Output module and decreasing  
sample frequency to 50 Hz and the "erratic" behavior doesn't change,  
sometimes the modules get to the OP state and sometimes not.

Thank you for your help!

Quoting "Dr.-Ing. Wilhelm Hagemeister" <hm at igh-essen.com>:

> Hello Jordi,
>
> this is a unknown behavior...
>
> please supply:
> - Kernel version
> - Ethercat version
> - Network card
> - Output of "ethercat master" (without running your sample program)
> - Output of "ethercat slaves" (without running your sample program)
> - Sample time of your sample program
>
> try your sample program with only one module and at a slow sample rate
> and with a different network adapter
>
> Regards Wilhelm.
>
> Am 05.10.2011 13:26, schrieb Jordi Blanch Carles:
>> Hello everybody,
>>
>> as nobody is answering to my colleague's question, I've thought that
>> maybe his explanation is difficult to understand, so I'll try to explain
>> it in a clearer way.
>>
>> Our problem is that we have modified the mini.c example module to fit
>> our modules: EK1101, EL4132, EL3102, EL2004. After compiling the module
>> without errors, when we insmod it, we find that sometimes some modules
>> get to the OP state and some others remain at the PREOP state or
>> continuously changing among INIT, SAFEOP, PREOP, ... states. Everytime
>> we insmod the mini module, the ethercat modules that really get the OP
>> state are different, so it seems a random behavior.
>>
>



Jordi Blanch Carles
Unidad de Ensayo y Control

ENCOPIM S.L.
C/. del Parc, 5 (nave 13)
P.I. Els Pinetons
E-08291 RIPOLLET (Barcelona)
Tel: (+34) 935 94 23 47
Fax: (+34) 935 94 64 15

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