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We are using PLC CX5140 and ET1100 which plugged on TI board TMDSECATCNCD379D.

We used Reference Guide - SPRUIG9–September 2017 and User's Guide - SPRUIF9–August 2017.

We want to communicate between them with TwinCAT in the PLC side and the Evaluation board with Code Composer in the other side with SPI as show in the diagram:

We succeeded to make the configuration and we can write to the ET1100 Register and write them in the Memory window at the advanced setting:


In the TwinCAT we saw the Error INIT INIT_ERR and we can't move to OP State:


We know that the RUN LED DS1 (EEPROM Load) on the ET1100 board should be on when we running the software on the code composer but it isn't.

In addition we have a function that check the EEPROM Load (ESC_ET1100EEPROMLoadedCheck(void)) and the software pass this test.

In the TwinCAT side we can read the 502 Register (EEPROM Status):


we are asking your help to fix the problem.