diff --git a/das-dn/cmg/ry.cpp b/das-dn/cmg/ry.cpp
index 34c0d6c8..8b8a9782 100644
--- a/das-dn/cmg/ry.cpp
+++ b/das-dn/cmg/ry.cpp
@@ -2814,6 +2814,7 @@ void CRYDevice::heart_beat(int status)
 #endif
                 jsonValue["linkId"] = linkId;
                 jsonValue["online"] = (config.processes[i].softdog >= PROCESS_WATCHDOG_TIME) ? false : true;
+                vLog(LOG_DEBUG, "link %s, %d\n", linkId, (config.processes[i].softdog >= PROCESS_WATCHDOG_TIME) ? 0 : 1);
                 jsonLink.append(jsonValue);
             }
         }
@@ -2832,6 +2833,7 @@ void CRYDevice::heart_beat(int status)
 #endif
                 jsonValue["deviceId"] = deviceId;
                 jsonValue["online"] = (config.units[i].softdog >= PROCESS_WATCHDOG_TIME) ? false : true;
+                vLog(LOG_DEBUG, "unit %s, %d\n", deviceId, (config.units[i].softdog >= PROCESS_WATCHDOG_TIME) ? 0 : 1);
                 jsonDevice.append(jsonValue);
             }
         }