Index: trunk/psModules/src/camera/pmFPARead.c
===================================================================
--- trunk/psModules/src/camera/pmFPARead.c	(revision 17082)
+++ trunk/psModules/src/camera/pmFPARead.c	(revision 17084)
@@ -189,5 +189,5 @@
     // Calculate the segment offset and upper limit
     if (numScans == 0) {
-        *next = (readdir == 1) ? trimsec->x0 : trimsec->y0;
+        *next = (readdir == 1) ? trimsec->y0 : trimsec->x0;
     } else {
         *next = image ? *readoutScansByType(readout, type) + numScans : 0;