How can I extend the PDIO data byte length in EtherCAT(SSC) of AM3359?

Henry Chou

Intellectual 265 points

Dear all:

I have the problems to extend the bytes length in EtherCAT (SSC).

As I know, it can be defined the PDI and PDO byte length as follow in tiescutils.c

#define PD_INPUT_SIZE 8 //4
#define PD_OUTPUT_SIZE 8 //4

Then it can be implement by

pSlaveInterface = Ecat_Open(PD_INPUT_SIZE,PD_OUTPUT_SIZE);

I want to change the byte length from 32 bits to 64 bits.

However, the TWINCAT (PC host side) can't be in run mode.

Becase of the byte length is mot match (TWINCAT defination are 32 bits).

How can I do with TWINCAT or SSC in this case?

Best regards

Henry Chou

over 10 years ago

0 SRIKANT IYER over 10 years ago

TI__Prodigy 520 points

Hello,

You can modify the process data only on the full application -- on the source stack from Beckhoff, when you apply TI's patch, you get the full EtherCAT source code, which you can modify for the process data you require. See processors.wiki.ti.com/.../AM335x_SYSBIOS_Industrial_SDK_01.01.00.06_User_Guide

Also, TwinCAT configures process data based on the ESI XMLs in the <TwinCAT Installation folder>\IO\EtherCAT folder. (On TwinCAT 3, it is <TwinCAT>\3.1\Config\Io\EtherCAT) You need to edit TI_ESC.XML (Sm's, RxPDO's and TxPDO's) to match the configuration in the application.

Thanks,

Srikant

0 Henry Chou over 10 years ago in reply to SRIKANT IYER

Intellectual 265 points

Hi! Srikant:
I got the ETG member as before. I think that it can be handled SSC_V5i11.zip. However , we should try the xml file.
Best regards.
Henry Chou

Processors

Processors forum

How can I extend the PDIO data byte length in EtherCAT(SSC) of AM3359?