Add setting to send old data, one cycle for scalars and one elemenbt for arrays (edwin needed for simpler triggering of incremental card timestamp).

scripts/ecmcDAQAddDataItem.cmd

@@ -19,7 +19,8 @@
 #-                                         Useful for oversampling slaves where normally the nextsync time is available.\n");
 #-                                         The calculated time then would correspond to the first data in the array recived.\n");
 #-         3 = time_ns_minus_period      : Time: Raw value minus one period.\n");
+#- SEND_OLD : 1 = Send one element old data (for scalars from last cycle, for arrays shift one element), defaults to 0 (send fresh data)
 #-
 #-################################################################################
 
-ecmcDAQAddItem(${PARAM},${FORMAT=0})
+ecmcDAQAddItem(${PARAM},${FORMAT=0},${SEND_OLD=0})