Have you called ecrt_master_activate? Note that it may take a few cycles before the slave actually transitions to OP after calling this.
Otherwise, check the syslog (possibly with ethercat debug 1) to see if there are any errors reported by the slave. It may be refusing to transition from PREOP due to some missing configuration parameter. Check the slave’s manual. From: etherlab-users [mailto:etherlab-users-boun...@etherlab.org] On Behalf Of ??? Sent: Monday, 23 November 2015 02:37 To: etherlab-users <etherlab-users@etherlab.org> Subject: [etherlab-users] slave not change to op state Hey, I am tring to use igh ethercat master but meeting a trouble. My slave is a servo drive and it supports ethercat communication. I set my slave information and pdos from early and in cycle task just read data from TPDO. But when I run it, I find the WC recevied was always zero and the AL state showed in PREOP. I could see the slave was touched, but how could this happened? My pdo setting have something wrong? Who can tell me the possible problems? Thank you!
_______________________________________________ etherlab-users mailing list etherlab-users@etherlab.org http://lists.etherlab.org/mailman/listinfo/etherlab-users
