diff --git a/plugins/modbus/modbus-tcp.json b/plugins/modbus/modbus-tcp.json
index 348afc77..1076ebbd 100644
--- a/plugins/modbus/modbus-tcp.json
+++ b/plugins/modbus/modbus-tcp.json
@@ -7,6 +7,32 @@
 		9,
 		11
 	],
+	"tag_regex": [
+		{
+			"type": 3,
+			"regex": "[1-9]+![3-4][0]*[0-9]*([1-9]#B|[1-9]#L|[1-9])$"
+		},
+		{
+			"type": 4,
+			"regex": "[1-9]+![3-4][0]*[0-9]*([1-9]#B|[1-9]#L|[1-9])$"
+		},
+		{
+			"type": 5,
+			"regex": "[1-9]+![3-4][0]*[0-9]*([1-9]#BB|[1-9]#BL|[1-9]#LL|[1-9]#LB|[1-9])$"
+		},
+		{
+			"type": 6,
+			"regex": "[1-9]+![3-4][0]*[0-9]*([1-9]#BB|[1-9]#BL|[1-9]#LL|[1-9]#LB|[1-9])$"
+		},
+		{
+			"type": 9,
+			"regex": "[1-9]+![3-4][0]*[0-9]*([1-9]#BB|[1-9]#BL|[1-9]#LL|[1-9]#LB|[1-9])$"
+		},
+		{
+			"type": 11,
+			"regex": "[1-9]+!([0-1][0]*[0-9]*[1-9]|[3-4][0]*[0-9]*[1-9].([0-9]|[0-1][0-5])$)"
+		}
+	],
 	"host": {
 		"name": "host",
 		"description": "local ip in server mode, remote device ip in client mode",