diff --git a/src/toolbox_scs/constants.py b/src/toolbox_scs/constants.py
index abebeaec5d5231e7340f349ab7f2a23ab8a53327..0f521b44a5fedd80a2c9e3f6fbbf9dedf23a03d1 100644
--- a/src/toolbox_scs/constants.py
+++ b/src/toolbox_scs/constants.py
@@ -452,6 +452,9 @@ mnemonics = {
                         {'source': 'SCS_ILH_LAS/MOTOR/LT3',
                          'key': 'AActualPosition.value',
                          'dim': None},),
+    "PP800_T0_mm": ({'source': 'SCS_ILH_LAS/MDL/OPTICALDELAY_PP800',
+                     'key': 'motorOffset.value',
+                     'dim': None},),
     "PP800_HalfWP": ({'source': 'SCS_ILH_LAS/MOTOR/ROT8WP1',
                       'key': 'actualPosition.value',
                       'dim': None},),