diff --git a/nova/core/controller.py b/nova/core/controller.py
index 5f84f99..f25317f 100644
--- a/nova/core/controller.py
+++ b/nova/core/controller.py
@@ -11,6 +11,7 @@
     Device,
     IODevice,
     AbstractRobot,
+    ValueType,
 )
 from nova.core.io import IOAccess
 
@@ -91,3 +92,9 @@ def get_robots(self) -> dict[str, AbstractRobot]:
             motion_group_id: self.motion_group(int(motion_group_id.split("@")[0]))
             for motion_group_id in self._activated_motion_group_ids
         }
+
+    async def read(self, key: str) -> ValueType:
+        return await self._io_access.read(key)
+
+    async def write(self, key: str, value: ValueType) -> None:
+        return await self._io_access.write(key, value)
diff --git a/nova/core/io.py b/nova/core/io.py
index c3ad121..f6f4259 100644
--- a/nova/core/io.py
+++ b/nova/core/io.py
@@ -80,9 +80,9 @@ async def read(self, key: str) -> bool | int | float:
         if io_value.boolean_value is not None:
             return io_value.boolean_value
         if io_value.integer_value is not None:
-            return io_value.integer_value
+            return int(io_value.integer_value)
         if io_value.floating_value is not None:
-            return io_value.floating_value
+            return float(io_value.floating_value)
         raise ValueError(f"IO value for {key} is of an unexpected type.")
 
     async def write(self, key: str, value: ValueType):
@@ -101,7 +101,7 @@ async def write(self, key: str, value: ValueType):
                 raise ValueError(
                     f"Integer value can only be set at an IO_VALUE_ANALOG_INTEGER IO and not to {io_value_type}"
                 )
-            io_value = models.IOValue(io=key, integer_value=value)  # TODO: handle mask
+            io_value = models.IOValue(io=key, integer_value=str(value))  # TODO: handle mask
         elif isinstance(value, float):
             if io_value_type is not IOValueType.IO_VALUE_ANALOG_FLOATING:
                 raise ValueError(