Error Msg ' Not Connected' in IB Trading Toolbox with Interactive Brokers TWS

I am having issues using the Trading Toolbox with Interactive brokers. I have tried this on two separate TWS/Matlab installations on two different machines, connected to two different IB accounts. Both connect to Excel via the TWS api/DDE without difficulty.

I have the latest TWS and api software installed. ActiveX socket clients and DDE are enabled in the TWS api settings. Trusted ip is set to 127.0.0.1. ibtws object seems to be created fine:

ib =

ibtws with properties:

    ClientId: 0
      Handle: [1x1 COM.TWS_TwsCtrl_1]
        Host: ''
        Port: 7599

However, any attempt to retried data produces a 'not connected' error message in Matlab. For example: ib.Handle.createContract; ibContract.symbol = 'GS'; ibContract.secType = 'STK'; ibContract.exchange = 'NYSE'; ibContract.currency = 'USD'

ibContract =

Interface.AE6A66F3_8FA9_4076_9C1F_3728B10A4CC7

>> getdata(ib, ibContract)

ans =

Not connected

[Karim]

Hello again, I have the same problem rgds KJ

Answer 1

[Ray Ducharme]

For me, it turned out I was using the wrong port. By going into...

TWS -> File -> Global Configuration -> API -> Settings -> Socket port...

I noticed the port number was not '7496' as seen in most Matlab examples (very close but not the same!). Making the switch fixed the "Not connected" error I was getting.

ib = ibtws('',7496) # <-- Switch the 7496 to your configuration port.

Good luck!

[Mil Shastri]

This was the issue. Thanks!

Answer 2

[Alexey Yeremenko]

Hello

Have you been able to connect? I got the same problem. No idea how to fix it.

Answer 3

[Yair Altman]

This problem is due to using the ActiveX connector to IB.

You might wish to try the cross-platform Java-based approach (not ActiveX) of the IB-Matlab product: http://undocumentedmatlab.com/ib-matlab

Answer 4

[Lars Helfenstein]

Hi, did one of you ever find a solution? I got the same and checked and installed everything several times.

Answer 5

[Jack Kenney]

Some customers have reported that it helps to specify the client id requirement during connection like this:

ib = ibtws('127.0.0.1', 7496, 0);

(Replacing 7496 with your configuration port)

Documentation for the Client ID argument in the "ibtws" function is available here:

https://www.mathworks.com/help/trading/ibtws.html?searchHighlight=ibtws&s_tid=doc_srchtitle#d117e39182

[Annie Leonhart]

You answer a question from 5 years ago. I'm sure they've figured it out by now.

[Guillaume]

Answers are not just for the benefit of the original poster. Others are encouraged to search answer and see if their question has already been answered.

[Annie Leonhart]

It’s already in the toolbox instructions. It clearly states how to set up the api.

[Maxime Bergeron]

Come on Annie...

Guillaume is right. It helped me.

No offense, but Jack comment is far more useful than yours.

Thanks Jack and Guillaume.