diff --git a/.gitignore b/.gitignore
index 5b6b072..8f2ea6b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 config.yaml
+.DS_Store
diff --git a/docs/apc_modbus_registry_map-990-9840B-EN.pdf b/docs/apc_modbus_registry_map-990-9840B-EN.pdf
new file mode 100644
index 0000000..1614db3
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