diff --git a/thingsboard_gateway/connectors/modbus/modbus_connector.py b/thingsboard_gateway/connectors/modbus/modbus_connector.py
index 6fc513f8..d7c69ff9 100644
--- a/thingsboard_gateway/connectors/modbus/modbus_connector.py
+++ b/thingsboard_gateway/connectors/modbus/modbus_connector.py
@@ -475,7 +475,21 @@ def __get_rpc_config(device: Slave, content):
         rpc_method = content['data']['method']
         if rpc_method == 'get' or rpc_method == 'set':
             params = {}
-            for param in content['data']['params'].split(';'):
+
+            if rpc_method == 'set':
+                input_params_and_value_list = content['data']['params'].split(' ')
+                if len(input_params_and_value_list) < 2:
+                    raise ValueError('Invalid RPC request format. '
+                                     'Expected RPC request format: '
+                                     'set param_name1=param_value1;param_name2=param_value2;...; value')
+
+                (input_params, input_value) = input_params_and_value_list
+                content['data']['params'] = input_value
+
+            if rpc_method == 'get':
+                input_params = content.get('data', {}).get('params', {})
+
+            for param in input_params.split(';'):
                 try:
                     (key, value) = param.split('=')
                 except ValueError:
diff --git a/thingsboard_gateway/connectors/modbus/slave.py b/thingsboard_gateway/connectors/modbus/slave.py
index d7ab231a..ddac21fd 100644
--- a/thingsboard_gateway/connectors/modbus/slave.py
+++ b/thingsboard_gateway/connectors/modbus/slave.py
@@ -35,15 +35,19 @@ def __init__(self, connector, logger, config):
         self.stopped = False
         self._log = logger
         self.connector = connector
-        self.name = "Modbus slave processor for unit " + str(config['unitId']) + " on host " + str(
-            config['host']) + ":" + str(config['port']) + ' ' + config['deviceName']
+        self.type = config.get('type', 'tcp').lower()
+
+        if self.type == 'serial':
+            self.name = "Modbus slave processor for unit " + str(config['unitId']) + " on port " + str(config['port']) + ' ' + config['deviceName']
+        else:
+            self.name = "Modbus slave processor for unit " + str(config['unitId']) + " on host " + str(
+                config.get('host')) + ":" + str(config['port']) + ' ' + config['deviceName']
 
         self.callback = connector.callback
 
         self.unit_id = config['unitId']
         self.host = config.get('host')
         self.port = config['port']
-        self.type = config.get('type', 'tcp').lower()
         self.method = config['method']
         self.tls = config.get('tls', {})
         self.timeout = config.get('timeout')