In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote: Joe, I have verified the problem you described. The SERIN does not handle WORD variables for the TIMEOUT parameter correctly. If the timeout is < 256 then use a BYTE variable. If the timeout must be > 255 then put this line just before the SERIN command: [code] __WPARAM12 = theTimeOut + 256 [/code] This will load the __PARAM1 and __PARAM2 variables with the correct timeout value. Let me know if this works for you. Bean. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=253008#m253064 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)