Problem of DDE Output in Excel

[Hartmut-Germany]

Hi everyone! I think I have some problem with DDE output in Excel.

As you can see in my worksheet, when the logic operation"=0" output a high level signal, then the Relay08 starts and the DDE Output00 write the data into the excel below. I want to write the data only once in one row,however it write everytime 9-11 rows.

How can I fix it ?Thank you for your time!

[CJ_Butler__DASYLab_Pro · Accepted solution]

The duration of the Relay closure is probably the offender. The Logic module is probably outputting TTL high for more than one sample. To limit that to one sample, or to just the rising edge, you will want to add a Combi Trigger module configured for Rising Edge and Directly, with the number of post trigger samples of 1. Put in between the Logic and the X-input of the Relay.  That will release a single value through the Relay.