Digi one SP Works Intermittently

I am using a Digi one device to “pop” a serial cash drawer. My problem is it seems to work very intermittently. I can have it work for about a dozen times and then it will just stop working. Do nothing then it will start working again. Any Ideas? sorry if I did not provide enough information.

Try enablng the tcp keepalives option, and don’t use the default setting of 2 hours, try something like 30 seconds or so.
You really need to post more information if you still have problems.

Where is the TCP keepalives option found ?

Nevermind I found it. When I enter 30 seconds and hit apply. I get an error saying a problem occured saving the item, but it saves anyway.