cRIO EtherCAT Master 3rd Party Slave - PDO read error after SDO read/write

[cassidycaid]

Hello All,

I am running Labview 2020

cRIO 9064

EtherCAT to ATI Mini58 Force/Torque Sensor

In general, the PDO read/write works (running headless as a start up app on cRIO).

The issue I'm having is, when I run either (blocking/unblocking) SDO read example vi, I lose the ability to read the shared variables.

Process I am using:

Restart the cRIO

Wait for startup program to run

Open project

run test VI -> works, can read PDO variables and write to PDO values
run blocking Read SDO vi -> works, can read SDO values

run test VI -> error on read of variable.

I can reboot and the same thing happens.

I have been through various forum posts and examined similar other code and I can't find a reason for it.