diff --git a/docs/img/QmodMaster.png b/docs/img/QmodMaster.png
new file mode 100644
index 0000000..53bdc92
Binary files /dev/null and b/docs/img/QmodMaster.png differ
diff --git a/docs/modbus_tcp.md b/docs/modbus_tcp.md
new file mode 100644
index 0000000..cb0a45c
--- /dev/null
+++ b/docs/modbus_tcp.md
@@ -0,0 +1,17 @@
+# Modbus-TCP
+This is the documentation of the Modbus-TCP task
+
+## Table of contents
+- [Table of contents](#table-of-contents)
+- [Initialization](#initialization)
+- [Usage](#usage)
+
+## Initialization
+The Modbus task is initialized in the main function.
+```c
+// Initialize Modbus task
+modbus_init();
+```
+## Usage
+
+![QmodMaster.exe](./img/QmodMaster.png)
\ No newline at end of file