9144 with custom FPGA and SGL EtherCAT User-defined Variables?

[gbecker]

Hi,

I currently have a small instrument driver (rs485) running on a 9144 chassis. The output values are communicated to the EtherCAT Master using FXP numbers. I would like to switch these FXP to SGL since I upgraded to LV 2012 SP1 with FPGA now supporting SGL numbers.

Is this possible? I tried several times to create the SGL User-defined Variables in the project, but the date type is grayed out.

Greetings from Munich,

Götz

[JohannesM · Accepted solution]

Unfortunately, SGL is not a supported data type for communication to/from a 9144. The available data types for user-defined I/O variables are:

* Fixed Point
* Signed Integers(Int8, Int16, Int32, Int64)
* Unsigned Integers (UInt8, UInt16, UInt32, UInt64)
* U32 Bit Field
* Boolean

More information regarding user-defined I/O variables can be found at:

Programming EtherCAT I/O With FPGA Intelligence: Differences in the LabVIEW FPGA Programming API
http://www.ni.com/white-paper/10618/en#toc4

[gbecker]

Thanks for the info.

Then I´ll (have to) stay with my current solution and hope for more NI love for their EtherCAT product line 🙂