Extra mevt-s attributes.

init/mevts-ess.json

 {
   "LEBTC_ST": {
-    "id": 6
+    "id": 6,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "LEBTC_END": {
-    "id": 7
+    "id": 7,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "MEBTC_ST": {
-    "id": 8
+    "id": 8,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "MEBTC_END": {
-    "id": 9
+    "id": 9,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "IONMAG_ST": {
-    "id": 10
+    "id": 10,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "IONMAG_END": {
-    "id": 11
+    "id": 11,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "BPULSE_ST": {
-    "id": 12
+    "id": 12,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "BPULSE_END": {
-    "id": 13
+    "id": 13,
+    "offset": 0,
+    "ctrl": "sctable"
   },
   "BPULSE_CM": {
-    "id": 15
+    "id": 15,
+    "offset": 0,
+    "ctrl": "sctable"
+  },
+  "COFFSET": {
+    "id": 16,
+    "offset": 0,
+    "ctrl": "pv",
+    "description": "Cycle Offset"
   }
 }