diff --git a/scripts/shutter.cmd b/scripts/shutter.cmd
index 45acf4d..161eac9 100644
--- a/scripts/shutter.cmd
+++ b/scripts/shutter.cmd
@@ -12,10 +12,10 @@ require s7plcFW
 # )
 
 epicsEnvSet("SPS_REGISTER_NAME", "$(SPS_REGISTER_NAME=SPS-$(FETCH_DB))")
-epicsEnvSet("SPS_FETCH_SIZE", "36")
+epicsEnvSet("SPS_FETCH_SIZE", "164")
 epicsEnvSet("SPS_WRITE_SIZE", "2")
 
-s7plcFWConfigure("$(SPS_REGISTER_NAME)", "$(SPS_IP)", "$(FETCH_PORT=2000),1,$(FETCH_DB),0,$(SPS_FETCH_SIZE)", "$(WRITE_PORT=2001),1,$(WRITE_DB=$(FETCH_DB)),0,$(SPS_WRITE_SIZE)", $(SPS_ENDIANNESS=1), $(SPS_RECEIVE_TIMEOUT=1000), $(SPS_RECEIVE_DELAY=200), 0)
+s7plcFWConfigure("$(SPS_REGISTER_NAME)", "$(SPS_IP)", "$(FETCH_PORT=2000),1,$(FETCH_DB),2,$(SPS_FETCH_SIZE)", "$(WRITE_PORT=2001),1,$(WRITE_DB=$(FETCH_DB)),2,$(SPS_WRITE_SIZE)", $(SPS_ENDIANNESS=1), $(SPS_RECEIVE_TIMEOUT=1000), $(SPS_RECEIVE_DELAY=200), 0)
 
 # Provides Connection Status PVs
 dbLoadRecords("$(sinqSPS_DB)/sps_status.db")
diff --git a/templates/shutter.substitutions b/templates/shutter.substitutions
index 2d3e772..8b43e7f 100644
--- a/templates/shutter.substitutions
+++ b/templates/shutter.substitutions
@@ -2,21 +2,21 @@ file "$(sinqSPS_DB)/writebit.db"
 {
 pattern
 {OFFSET, BIT, BIT_NAME        }
-{2     , 7  , "OPEN-SHUTTER"  }
-{3     , 0  , "CLOSE-SHUTTER" }
+{0     , 7  , "OPEN-SHUTTER"  }
+{1     , 0  , "CLOSE-SHUTTER" }
 }
 
 file "$(sinqSPS_DB)/readbit.db"
 {
 pattern
 {OFFSET, BIT, BIT_NAME        }
-{2     , 0  , "PSYS-OK"       }
-{2     , 1  , "SHUTTER-READY" }
-{2     , 2  , "EMERGENCY-STOP"}
-{2     , 3  , "NOT-LOCKED"    }
-{2     , 4  , "CLOSED"        }
-{2     , 5  , "OPEN"          }
-{2     , 6  , "REMOTE-OKAY"   }
+{0     , 0  , "PSYS-OK"       }
+{0     , 1  , "SHUTTER-READY" }
+{0     , 2  , "EMERGENCY-STOP"}
+{0     , 3  , "NOT-LOCKED"    }
+{0     , 4  , "CLOSED"        }
+{0     , 5  , "OPEN"          }
+{0     , 6  , "REMOTE-OKAY"   }
 }
 
 # The way that the strings are currently implemented in the SPS, the first two
@@ -27,10 +27,10 @@ file "$(sinqSPS_DB)/readstring.db"
 {
 pattern
 {OFFSET, LENGTH, STRING_NAME      }
-{6     , 24    , "PSYS-OK-TXT"    }
-{32    , 22    , "SHUTTER-READY"  }
-{56    , 30    , "EMERGENCY-STOP" }
-{88    , 22    , "NOT-LOCKED"     }
-{110   , 19    , "OPEN"           }
-{134   , 32    , "REMOTE-ENABLED" }
+{4     , 24    , "PSYS-OK-TXT"    }
+{30    , 22    , "SHUTTER-READY"  }
+{54    , 30    , "EMERGENCY-STOP" }
+{86    , 22    , "NOT-LOCKED"     }
+{108   , 19    , "OPEN"           }
+{132   , 32    , "REMOTE-ENABLED" }
 }