I'm tryng to read some objects by SDO from a EK1100, I'm using the ETC_CO_SDOREAD without success every time the eError return a timeout, I have tried with different objects found in the xml file without success. The communication with the device works fine I can read and write inputs and outputs.
The Codesys version I'm using is the 3.4 sp1 and the target is a RTE 3.4.1
Anyone can help me?
Although I don't know EtherCat or the FB in question (I know CANopen) I would still like to make one remark. If there is an enable input to the FB you may have to keep it enabled until you receive a response otherwise you terminate the SDO READ FB prematurely and the FB aborts. What is the SDO abort message data/code? You should have 8 data bytes from the abort message.
I keep the xExecute enable till the error message is showedt. You can check the FB status in the attached image.
I'm sorry if someone lost time about this topic, I discovered that the EK1100 doesn't support COE message.
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