diff --git a/protos/stationLayoutGraphics.proto b/protos/stationLayoutGraphics.proto
index d5df364..1b3fdd9 100644
--- a/protos/stationLayoutGraphics.proto
+++ b/protos/stationLayoutGraphics.proto
@@ -435,6 +435,7 @@ message Transponder { // 应答器
   repeated uint32 centralizedStations = 10; // 集中站Id列表
   string fixedTelegram = 11; //应答器固定报文
   string fixedUserTelegram = 12; //应答器固定用户报文
+  string originalCode = 13; //应答器原编号（厂商提供数据编号）
 }
 
 message SimpleRef {