diff --git a/sl2-100/pd.py b/sl2-100/pd.py
index cb48b62..ce5b367 100644
--- a/sl2-100/pd.py
+++ b/sl2-100/pd.py
@@ -105,6 +105,8 @@ class Decoder(srd.Decoder):
         self.lowpin = 0        #当前采样宽度(78.125ns)内低电平数量
         self.filename = "d:/sl2-100.csv"
         self.file = None
+        
+        self.x_value = 0
 
     def metadata(self, key, value):
         if key == srd.SRD_CONF_SAMPLERATE:
@@ -151,7 +153,7 @@ class Decoder(srd.Decoder):
                 self.xv_first = es
                 self.xv_cnt = 0
                 self.xv_str = ""
-                self.file.write('%d' % self.data + ',')
+                self.x_value=self.data
         elif self.state == 'xpos_v':
             self.xv_str += str(bit)
             self.xv_cnt = self.xv_cnt+1
@@ -192,7 +194,7 @@ class Decoder(srd.Decoder):
                 self.yv_first = es
                 self.yv_cnt = 0
                 self.yv_str = ""
-                self.file.write('%d' % self.data + '\n')
+                self.file.write( '%d' % self.x_value + ',' + '%d' % self.data + '\n')
         elif self.state == 'ypos_v':
             self.yv_str += str(bit)
             self.yv_cnt = self.yv_cnt+1