Fix UI update from the backend

Author: dhoomakethu

modbus_simulator/ui/gui.py

@@ -651,7 +651,7 @@ def _sync_modbus_block_values(self):
                             int(self.active_slave),
                             block_name,
                             int(k),
-                            self.block_size
+
                         )
                         try:
                             if actual_data[0] != int(v):

modbus_simulator/utils/modbus.py

@@ -126,7 +126,7 @@ def set_values(self, slave_id, block_name, address, values):
         slave = self.server.get_slave(slave_id)
         slave.set_values(block_name, address, values)
 
-    def get_values(self, slave_id, block_name, address, size):
+    def get_values(self, slave_id, block_name, address, size=1):
         slave = self.server.get_slave(slave_id)
         return slave.get_values(block_name, address, size)
 

modbus_simulator/utils/pymodbus_server.py

@@ -197,7 +197,7 @@ def set_values(self, slave_id, block_name, address, values):
         if slave.validate(_FX_MAPPER[block_name], address, count=len(values)):
             slave.setValues(_FX_MAPPER[block_name], address, values)
 
-    def get_values(self, slave_id, block_name, address, size):
+    def get_values(self, slave_id, block_name, address, size=1):
         slave = self.get_slave(slave_id)
         if slave.validate(_FX_MAPPER[block_name], address, count=size):
             return slave.getValues(_FX_MAPPER[block_name], address, size)