Creating Multiple Write Files in DASYlab

[LaurenE]

I am building a DASYlab file to collect data from several sources. Also in this file I will be controlling a valve which opens and closes with a switch in DASYlab. The problem I am running into is the following:

When I start the measurement, I do not want to start data collection, I just want to monitor the data until I am ready to collect data. Thus, I added a relay before my write file and can use a switch to start or stop transmitting data without stopping my measurements. However, I want to be able to create a new data file each time I turn on the switch, but in its current state, when I turn off and turn on the switch, it simply continues appending data to the same file, and only changes to a new file when I stop and restart the measurement. This would be fine, but because my file also contains a switch controlling a valve that my system operates on, I cannot start and stop the measurement repeatedly without also closing the valve (which is a fail-close valve). 

I am not sure if I am missing something simple that would allow me to make a new file each time I use a switch to start and stop data relay. I attempted making a global variable that increments when the switch is stopped and inputting that global variable into the file name so it would create a new file with a new name, but that did not work for me. I would appreciate any insight into solving this problem. I am relatively new to DASYlabs and was never formally trained, so I am hoping I am just missing a simple solution. 

Thank you. 

[Fausto]

Hello @LaurenE.

In the attached DASYLab 2022 worksheet, I used a TTL Pulse Generator module to simulate your switch to the Relay module and also branch over to an Action module.  When the Action module receives a rising edge from the TTL Pulse Generator module, the Write module creates a new data file; see below.

 

 

 

 

Regards,

Fausto

save_new_file_v1.DSB

[LaurenE]

Ah, this makes a lot of sense. Thank you!