diff --git a/tedge_modbus/reader/reader.py b/tedge_modbus/reader/reader.py
index d4b0253..f1dca8c 100644
--- a/tedge_modbus/reader/reader.py
+++ b/tedge_modbus/reader/reader.py
@@ -622,16 +622,21 @@ def register_service(self):
     def register_child_devices(self, devices):
         """Register the child devices with thin-edge.io"""
         for device in devices:
-            self.logger.debug("Child device registration for device %s", device["name"])
             topic = f"te/device/{device['name']}//"
-            payload = {
-                "@type": "child-device",
-                "name": device["name"],
-                "type": "modbus-device",
-            }
-            self.send_tedge_message(
-                MappedMessage(json.dumps(payload), topic), retain=True, qos=1
-            )
+            if device["name"] != "main":
+                self.logger.debug(
+                    "Child device registration for device %s", device["name"]
+                )
+                payload = {
+                    "@type": "child-device",
+                    "name": device["name"],
+                    "type": "modbus-device",
+                }
+                self.send_tedge_message(
+                    MappedMessage(json.dumps(payload), topic), retain=True, qos=1
+                )
+
+            self.logger.debug("Set command registration for device %s", device["name"])
             cmd_payload = "{}"
             for cmd in ["modbus_SetRegister", "modbus_SetCoil"]:
                 cmd_topic = topic + f"/cmd/{cmd}"