diff --git a/brukeropusreader/block_data.py b/brukeropusreader/block_data.py
index 1e7ee51..5eedaed 100644
--- a/brukeropusreader/block_data.py
+++ b/brukeropusreader/block_data.py
@@ -19,7 +19,11 @@ BLOCK_0 = defaultdict(
     },
 )
 
-BLOCK_7 = {4: "ScSm", 8: "IgSm", 12: "PhSm"}
+BLOCK_7 = {4: "ScSm",
+           8: "IgSm",
+           12: "PhSm",
+           56: "PwSm",
+}
 
 BLOCK_11 = {4: "ScRf", 8: "IgRf"}
 
@@ -27,6 +31,7 @@ BLOCK_23 = {
     4: "ScSm Data Parameter",
     8: "IgSm Data Parameter",
     12: "PhSm Data Parameter",
+    56: "PwSm Data Parameter",
 }
 
 BLOCK_27 = {4: "ScRf Data Parameter", 8: "IgRf Data Parameter"}