diff --git a/ip_cores/conv-common-gw b/ip_cores/conv-common-gw
--- a/ip_cores/conv-common-gw
+++ b/ip_cores/conv-common-gw
@@ -1 +1 @@
-Subproject commit 1fbe6c0a88be2a99efa363465e69cafed9f5c2ec
+Subproject commit 1fbe6c0a88be2a99efa363465e69cafed9f5c2ec-dirty
diff --git a/top/conv_ttl_rs485.vhd b/top/conv_ttl_rs485.vhd
index 40adb75..53750f0 100644
--- a/top/conv_ttl_rs485.vhd
+++ b/top/conv_ttl_rs485.vhd
@@ -49,6 +49,7 @@ use work.wishbone_pkg.all;
 use work.conv_common_gw_pkg.all;
 
 entity conv_ttl_rs485 is
+  generic (g_simul          : boolean := FALSE); 
   port
   (
     -- Clocks
@@ -335,7 +336,7 @@ begin
   cmp_conv_common : conv_common_gw
     generic map
     (
-      -- Number of repeater channels
+      g_simul                 => g_simul,
       g_nr_chans              => c_nr_chans,
       g_board_id              => c_board_id,
       g_gwvers                => c_gwvers,
