diff --git a/source/main.py b/source/main.py
index c2d1712..d1e3086 100644
--- a/source/main.py
+++ b/source/main.py
@@ -91,8 +91,8 @@ modbus_map = {
     0xA2: ["温度补偿temp2_b",             2],
     0xA3: ["系统工作模式",                1],
     0xA4: ["电感电流给定值curr_set",      2],
-    0xA5: ["保留",                        1],
-    0xA6: ["保留",                        1],
+    0xA5: ["抖动频率上限",                2],
+    0xA6: ["抖动频率下限",                2],
     0xA7: ["保留",                        1],
     0xA8: ["保留",                        1],
     0xA9: ["保留",                        1],
@@ -144,6 +144,20 @@ def make_frame_modbus(block:dict):
         data_val //= 0x1_0000
         frame.append(data_val // 256 % 256)
         frame.append(data_val % 256)
+    elif block['type'] == "write_str":
+        frame.append(0x10)
+        data_len = len(block['data_val'])
+        data_val  = block['data_val']
+        if data_len > 0x0100:
+            raise("modbus data len oversize.")
+        frame.append(data_addr // 256 % 256)
+        frame.append(data_addr % 256)
+        frame.append(0x00)
+        frame.append(data_len // 2)
+        frame.append(data_len)
+        for i in range(data_len//2):
+            frame.append(data_val[2*i + 1])
+            frame.append(data_val[2*i])
 
     crc = calculator.checksum(bytearray(frame))
     frame.append(crc % 256)
@@ -252,7 +266,7 @@ def test2():
 
     print(frame_string)
 
-def frame_read(daddr=0x60, dlen=0x50):
+def frame_read(daddr=0x60, dlen=0x50, dev_addr=[0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA]):
     block_modbus = {
         'addr_dev' : 0x01,
         'data_addr' : daddr,
@@ -261,7 +275,7 @@ def frame_read(daddr=0x60, dlen=0x50):
     }
     frame1 = make_frame_modbus(block_modbus)
     block_dlt645 = {
-        'addr' : [0x01, 0x02, 0x03, 0x04, 0x05, 0x06],
+        'addr' : dev_addr,
         'data' : frame1,
     }
     frame2 = make_frame_dlt645(block_dlt645)
@@ -276,7 +290,7 @@ def frame_read(daddr=0x60, dlen=0x50):
     output_text = display_data(block_modbus['data_addr'], frame4)
     print(output_text)
 
-def frame_write_one(daddr=0x85, dval=-900):
+def frame_write_one(daddr=0x85, dval=-900, dev_addr=[0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA]):
     block_modbus = {
         'addr_dev' : 0x01,
         'data_addr' : daddr,
@@ -285,13 +299,13 @@ def frame_write_one(daddr=0x85, dval=-900):
     }
     frame1 = make_frame_modbus(block_modbus)
     block_dlt645 = {
-        'addr' : [0x01, 0x02, 0x03, 0x04, 0x05, 0x06],
+        'addr' : dev_addr,
         'data' : frame1,
     }
     frame2 = make_frame_dlt645(block_dlt645)
     com.write(bytearray(frame2))
 
-def frame_write_dual(daddr=0x91, dval=600):
+def frame_write_dual(daddr=0x91, dval=600, dev_addr=[0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA]):
     block_modbus = {
         'addr_dev' : 0x01,
         'data_addr' : daddr,
@@ -300,7 +314,22 @@ def frame_write_dual(daddr=0x91, dval=600):
     }
     frame1 = make_frame_modbus(block_modbus)
     block_dlt645 = {
-        'addr' : [0x01, 0x02, 0x03, 0x04, 0x05, 0x06],
+        'addr' : dev_addr,
+        'data' : frame1,
+    }
+    frame2 = make_frame_dlt645(block_dlt645)
+    com.write(bytearray(frame2))
+
+def frame_write_str(daddr=0x82, dval=[0x06, 0x05, 0x04, 0x03, 0x02, 0x01], dev_addr=[0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA]):
+    block_modbus = {
+        'addr_dev' : 0x01,
+        'data_addr' : daddr,
+        'data_val' : dval,
+        'type' : 'write_str',
+    }
+    frame1 = make_frame_modbus(block_modbus)
+    block_dlt645 = {
+        'addr' : dev_addr,
         'data' : frame1,
     }
     frame2 = make_frame_dlt645(block_dlt645)
@@ -339,7 +368,7 @@ def main_webui():
 com = None
 if __name__ == "__main__":
     com = Serial("Com16", baudrate=115200, parity='N', timeout=2)
-
+    address = [0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA]
 
     pass