Hi Guys.I need to read one binary file created from LV13 on LV7. The LV13 have function READ BINARY and I put the data type (cluster of the four arrays) and the result is ok, but in LV7 this function is completely different.How do I read this file? Is possible?See the attachment how reading in LV13. Thanks,Wendel

Well, you say Write is for LV13 and read is for LV7 but the VIs in your post are actually both in LV15 saved!! The file IO functions have been quite a bit revamped in LV 8.0 but they didn't remove anything nor added a lot to it other than the ability to select the Endianess on the Binary Read and Write.In LabVIEW < 8.0 you didn't have seperate nodes for the Binary and ASCII string modes but they were really all combined in the same node. Still you could read and write binary data there too, and the flattened format for all the basic datatypes didn't change at all. So to read the file that you created in your Write binary file LV13.vi in LV 7 you would need the attached VI. Any other binary read and write should work the same. This works for all integers (except 64 bit which don't exist in LabVIEW before 8.0), single, double and extended precision floats, complex types of the floats, booleans, strings, clusters containing any of these and arrays of any of these types and even the timestamp should work in LabVIEW 7 too. Where it could get tricky is if you try to write Variants, Analog and Digital Waveforms, and other such LabVIEW special datatypes. Their internal binary data format isn't really documented and at least some of them have changed between LV 7 and later versions. Note: if you open this VI in a LabVIEW version 8.0 or later LabVIEW will mutate it to use the new file IO nodes. So to see how it needs to be done in LabVIEW 7 you really will have to open it in LabVIEW 7.x.