diff --git a/documentation/clients/OPAL.md b/documentation/clients/OPAL.md
index c1eae6226..115782f56 100644
--- a/documentation/clients/OPAL.md
+++ b/documentation/clients/OPAL.md
@@ -1,3 +1,14 @@
 # OPAL-RT {#opal}
 
+## Arguments for OPAL-RT block
+
+Param		| Description	| Example Value
+--------------- | ------------- | --------------
+FloatParam[0]	| Protocol	|
+FloatParam[1]	| RemotePort	| 10200
+FloatParam[2]	| LocalPort	| 10201
+StringParam[0]	| RemoteAddr	| 192.168.0.10
+StringParam[1]	| LocalAddr	| 192.168.0.11
+StringParam[2]	| InterfaceName	| eth2
+
 @todo Complete documentation for the OPAL-RT Simulink module.