NI 9145 with NI 9476 + 9375 on TwinCAT doest work

[Gabriel Utomo]

Hi all,

 

I need to control a NI 9145 EtherCAT chassis using TwinCAT as the Master. In short,

This setup [1] works:

Slot 1: NI 9476 (wired only 1x DO to a simple Solenoid Valve, VSup & COM to 24V supply)
Slot 2-8: Empty

 

This setup [2] doesn't work:

Slot 1: NI 9476 (same as setup [1])
Slot 2: NI 9375 (no wire at all, only slotted in)

Slot 3-8: Empty

 

I generated the TwinCAT ESI files using the NI Slave XML Creator, from NI Industrial Comm for EtherCAT 2023.

Based on those 2 setup case, I don't think there is any problem on the electrical side.

 

On setup [2], everything looks fine for me on the TwinCAT side, NI 9145 state can change to "OP" and I can set the Online value, but there is no change on the actual DO output. 9476 = sourcing output, so I'm expecting a 24V, which is present if I use setup [1]).

I can read the CoE online data, and can also use the AoE - Online tab to read them manually.

https://forums.ni.com/t5/image/serverpage/image-id/357407iD344B63133C2AFBD/image-size/medium?v=v2&px=400

 

Tried:

1. Wire the NI 9375 (setup [2]). The Digital Input worked just fine, but the Output didn't work (both NI 9375 & 9476).

2. Swap the modules with a spare, didn't work.

3. Swap slot 1 & 2 (with their respective ESI files), didn't work.

 

Anyone encounter similar problem, or have any experience using NI 9476 + 9375 together in NI 9145 chassis (maybe using cRIO as the master)?

Attached is the ESI file i used for 9476 + 9375.

 

Thank you.

Gabriel.

DO_DIO.xml

[Neil Pate]

@Gabriel Utomo there is not much activity on LAVA these days. You might have more success if you post on the LabVIEW Discord http://discord.gg/labview

[ShaunR]

2 hours ago, Neil Pate said:

@Gabriel Utomo there is not much activity on LAVA these days. You might have more success if you post on the LabVIEW Discord http://discord.gg/labview

Unlikely.

[Neil Pate]

26 minutes ago, ShaunR said:

Unlikely.

Because of the people on Discord or because of NI's implementation of EtherCAT? 😉

 

[Rolf Kalbermatter]

On 9/14/2026 at 4:20 PM, Neil Pate said:

Because of the people on Discord or because of NI's implementation of EtherCAT? 😉

 

Both! NI's implementation of EtherCAT leaves a lot to be desired. As to Discord, it's not really the people on there but I just can't seem to manage and keep an overview on the various threads in Discord. Partly that is because I mostly look at it on mobile, but in a webbrowser on the PC it's not that much better, despite the bigger screen.

Edited 1 hour ago by Rolf Kalbermatter