Hello,
You can use ecrt_master_state, please see ecrt.h:
/** Reads the current master state.
*
* Stores the master state information in the given \a state structure.
*/
void ecrt_master_state(
const ec_master_t *master, /**< EtherCAT master. */
ec_master_state_t *state /**< Structure to store the
information. */
);
/** Master state.
*
* This is used for the output parameter of ecrt_master_state().
*
* \see ecrt_master_state().
*/
typedef struct {
unsigned int slaves_responding; /**< Number of slaves in the bus. */
unsigned int al_states : 4; /**< Application-layer states of all
slaves.
The states are coded in the lower 4 bits.
If a bit is set, it means that at
least one
slave in the bus is in the corresponding
state:
- Bit 0: \a INIT
- Bit 1: \a PREOP
- Bit 2: \a SAFEOP
- Bit 3: \a OP */
unsigned int link_up : 1; /**< \a true, if the network link is up. */
} ec_master_state_t;
Best regards
Andreas
Am 23.05.2012 11:23, schrieb [email protected]:
Hello,
We use ecrt_master_get_slave as part of the poll cycle to fetch the
slaves' status.
Regards,
Ronaldo
*From:*[email protected]
[mailto:[email protected]] *On Behalf Of *Ian Norton
*Sent:* 18 May 2012 08:47
*To:* [email protected]
*Subject:* [etherlab-users] bus status recognition
Hi,
I'm running etherlab master in a regular Centos 6 kernel.
The system functions fine, but it appears still to be fine if the
network cable is unplugged!
The normal command line commands still show all slaves happily working
and in OP mode etc, and my user code still receives the coorect number
of responding slaves form ecrt_master_state.
Does anyone know how to detect an unplugged/broken network cable
during operation?
regards
Ian R.K. Norton
System Support Engineer
Aircraft Engineering
Cranfield Aerospace Ltd
Cranfield
Bedford MK43 0AL
UK
Tel - +44 (0) 1234 754926
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