diff --git a/firmware/data/bottom.js b/firmware/data/bottom.js
index 3d0c2f0..3d4258f 100644
--- a/firmware/data/bottom.js
+++ b/firmware/data/bottom.js
@@ -30,6 +30,7 @@ amain.classList.remove("pure-button-primary");
 acfg.classList.remove("pure-button-primary");
 atde.classList.add("pure-button-primary");
 createTable();
+fillTableFromJson();
 });
 } catch (error) {
 console.log("Error: load listener of the tab action listener management: " + error.message);
@@ -292,4 +293,25 @@ container.innerHTML = "";
 container.classList.add("pure-form");
 container.appendChild(table);
 container.appendChild(button);
-}
\ No newline at end of file
+}
+function fillTableFromJson() {
+var xhr = new XMLHttpRequest();
+xhr.onreadystatechange = function() {
+if (this.readyState == 4 && this.status == 200) {
+var json = JSON.parse(this.responseText);
+var tableRows = document.querySelectorAll("table tr");
+for (var i = 1; i < tableRows.length; i++) {
+var cells = tableRows[i].querySelectorAll("td");
+var hour = parseInt(cells[0].querySelector("select").value);
+var minute = parseInt(cells[1].querySelector("select").value);
+for (var j = 0; j < json.tcdata.length; j++) {
+if (json.tcdata[j].hour == hour && json.tcdata[j].min == minute) {
+cells[2 + j].querySelector("select").value = json.tcdata[j]["ch" + (j + 1)];
+}
+}
+}
+}
+};
+xhr.open("GET", "http://192.168.0.27/tc_data_blocks_read", true);
+xhr.send();
+}
diff --git a/firmware/html/bottom.js b/firmware/html/bottom.js
index 8f7b39e..ed7644b 100644
--- a/firmware/html/bottom.js
+++ b/firmware/html/bottom.js
@@ -43,6 +43,7 @@ function addTabListener() {
             atde.classList.add("pure-button-primary");
 
             createTable(); // recreate the table on timing data editor tab
+            fillTableFromJson();
         });
     } catch (error) {
         console.log("Error: load listener of the tab action listener management: " + error.message);
@@ -354,4 +355,26 @@ function createTable() {
     container.classList.add("pure-form");
     container.appendChild(table);
     container.appendChild(button);
-}
\ No newline at end of file
+}
+
+function fillTableFromJson() {
+    var xhr = new XMLHttpRequest();
+    xhr.onreadystatechange = function() {
+        if (this.readyState == 4 && this.status == 200) {
+            var json = JSON.parse(this.responseText);
+            var tableRows = document.querySelectorAll("table tr");
+            for (var i = 1; i < tableRows.length; i++) {
+                var cells = tableRows[i].querySelectorAll("td");
+                var hour = parseInt(cells[0].querySelector("select").value);
+                var minute = parseInt(cells[1].querySelector("select").value);
+                for (var j = 0; j < json.tcdata.length; j++) {
+                    if (json.tcdata[j].hour == hour && json.tcdata[j].min == minute) {
+                        cells[2 + j].querySelector("select").value = json.tcdata[j]["ch" + (j + 1)];
+                    }
+                }
+            }
+        }
+    };
+    xhr.open("GET", "http://192.168.0.27/tc_data_blocks_read", true);
+    xhr.send();
+}