{"action":"opened","issue":{"url":"https://api.github.com/repos/ROBOTIS-GIT/DynamixelSDK/issues/2","repository_url":"https://api.github.com/repos/ROBOTIS-GIT/DynamixelSDK","labels_url":"https://api.github.com/repos/ROBOTIS-GIT/DynamixelSDK/issues/2/labels{/name}","comments_url":"https://api.github.com/repos/ROBOTIS-GIT/DynamixelSDK/issues/2/comments","events_url":"https://api.github.com/repos/ROBOTIS-GIT/DynamixelSDK/issues/2/events","html_url":"https://github.com/ROBOTIS-GIT/DynamixelSDK/issues/2","id":155463092,"number":2,"title":"Different return delay time","user":{"login":"dkoguciuk","id":9368849,"avatar_url":"https://avatars.githubusercontent.com/u/9368849?v=3","gravatar_id":"","url":"https://api.github.com/users/dkoguciuk","html_url":"https://github.com/dkoguciuk","followers_url":"https://api.github.com/users/dkoguciuk/followers","following_url":"https://api.github.com/users/dkoguciuk/following{/other_user}","gists_url":"https://api.github.com/users/dkoguciuk/gists{/gist_id}","starred_url":"https://api.github.com/users/dkoguciuk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dkoguciuk/subscriptions","organizations_url":"https://api.github.com/users/dkoguciuk/orgs","repos_url":"https://api.github.com/users/dkoguciuk/repos","events_url":"https://api.github.com/users/dkoguciuk/events{/privacy}","received_events_url":"https://api.github.com/users/dkoguciuk/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-05-18T10:04:33Z","updated_at":"2016-05-18T10:04:33Z","closed_at":null,"body":"Hello!\r\n\r\nI is probably not the problem of your package, but I thought maybe you have already faced similar situation in the past: I have AX-12A dynamixels and using your package and USB2DYNAMIXEL I've got back a frame from servo using Protocol1.0/Ping program, but the time between sent and received package is each time different. I use 1Mb/s and Return Delay Time of 0 (set in EEPROM area). 3 of 4 frames I've got something like 20us of delay:\r\n![good](https://cloud.githubusercontent.com/assets/9368849/15354960/7c9227f2-1cf0-11e6-92ba-f43557340acc.jpg)\r\nBut sumetimes I've got really long return delay time (about 150us or even 200us):\r\n![bad](https://cloud.githubusercontent.com/assets/9368849/15354976/92089198-1cf0-11e6-90b6-954a3aea8699.jpg)\r\n\r\nDo you ever seen something like this? Do you have any idea what can cause this problem?\r\nBest,\r\nDaniel"}}