rhirsch Posted February 22, 2013 Share Posted February 22, 2013 Hi folks, I'm probably doing something real dumb. I created a v channel becuase I want to do and xy plot. The x axis is distance a sensor is into a furnace. So since there s a belt, the distance in is based on time. so I have a variable, beltspeed, which is set ot the beltspeed. for example 1/60 as the parts move 1 inch in 60 seconds. the channel hoilding the historical values of the part is called parttemp Then I created a v channel, distance, defined as: (GetTime(parttemp)-parttemp.time[Numrows(parttemp)-1])*beltspeed Ths work. When I look at the table, the 0 position has the farthest length. This is what I want. But when I go to a page, and simply put up a variable display like I have for parttemp, I just want to see the latest value, so I put distance[0] there. But it doesnt accept that. The expression box stays pink. The channel distance doesnt show up in the pop up menu containing all the items I could put there. why doesnt the v channel work so as to allow me to use it? Link to comment Share on other sites More sharing options...
AzeoTech Posted February 22, 2013 Share Posted February 22, 2013 V Channels all start with V., so you want: v.distance[0] This is to differentiate them from regular channels. Link to comment Share on other sites More sharing options...
rhirsch Posted February 22, 2013 Author Share Posted February 22, 2013 lol. told ya I was doing something dumb. I really dd look throughout many parts of the manual, but never saw that. Link to comment Share on other sites More sharing options...
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