diff --git a/adsApp/src/ADSPortDriver.cpp b/adsApp/src/ADSPortDriver.cpp
index 86fd301..422bafc 100644
--- a/adsApp/src/ADSPortDriver.cpp
+++ b/adsApp/src/ADSPortDriver.cpp
@@ -329,37 +329,43 @@ asynStatus ADSPortDriver::ADSConnect(asynUser *pasynUser) {
         status = static_cast<asynStatus>(
             adsConnection->resolve_variables(ads_read_vars));
 
-        if (status) {
+        if (status && lastReadError != status) {
             LOG_ERR_ASYN(pasynUser,
                          "Could not resolve ADS read variable names (%i): %s",
                          status, ads_errors[status].c_str());
+            lastReadError = status;
             return status;
         }
+        lastReadError = 0;
     }
 
     if (ads_write_vars.size()) {
         status = static_cast<asynStatus>(
             adsConnection->resolve_variables(ads_write_vars));
 
-        if (status) {
+        if (status && lastWriteError != status) {
             LOG_ERR_ASYN(pasynUser,
                          "Could not resolve ADS write variable names(%i): %s",
                          status, ads_errors[status].c_str());
+            lastWriteError = status;
             return status;
         }
+        lastWriteError = 0;
     }
+    
     LOG_WARN_ASYN(pasynUser, "Resolved %lu read and %lu write variable names",
                   ads_read_vars.size(), ads_write_vars.size());
 
     // initialize sum-read buffers
     status = static_cast<asynStatus>(SumRead.initialize());
-    if (status) {
+    if (status && lastSumReadError != status) {
         LOG_ERR_ASYN(pasynUser,
                      "Error initializing sum-read request buffers (%i): %s",
                      status, ads_errors[status].c_str());
+        lastSumReadError = status;
         return status;
     }
-
+    lastSumReadError = 0;
     LOG_WARN_ASYN(pasynUser, "Initialized sum-read request buffers");
 
     status = doSumRead();
@@ -976,3 +982,5 @@ WriteResult ADSPortDriver::stringWrite(DeviceVariable &deviceVar,
 
     return result;
 }
+
+
diff --git a/adsApp/src/ADSPortDriver.h b/adsApp/src/ADSPortDriver.h
index e65404b..99311a8 100644
--- a/adsApp/src/ADSPortDriver.h
+++ b/adsApp/src/ADSPortDriver.h
@@ -82,6 +82,9 @@ class ADSPortDriver : public Autoparam::Driver {
     uint32_t const adsFunctionTimeout;
     const std::shared_ptr<Connection> adsConnection;
     const std::chrono::milliseconds sumReadPeriod;
+    long lastReadError;
+    long lastWriteError;
+    long lastSumReadError;
 
     SumReadRequest SumRead;
 
diff --git a/adsApp/src/epics-ads/SumReadRequest.cpp b/adsApp/src/epics-ads/SumReadRequest.cpp
index 19273b9..fd2333b 100644
--- a/adsApp/src/epics-ads/SumReadRequest.cpp
+++ b/adsApp/src/epics-ads/SumReadRequest.cpp
@@ -207,10 +207,15 @@ int SumReadRequest::initialize() {
         for (size_t i_var = 0; i_var < chunk->variables.size(); i_var++) {
             std::shared_ptr<ADSVariable> var = chunk->variables[i_var];
             if (var->addr->is_resolved() == false) {
-                LOG_ERR("variable name is not resolved: '%s'",
-                        var->addr->get_var_name().c_str());
+                std::string name =  var->addr->get_var_name();
+                if (name !=last) {
+                    LOG_ERR("variable name is not resolved: '%s'",
+                        name.c_str());
+                    last = var->addr->get_var_name();
+                }
                 return EPICSADS_NOT_RESOLVED;
             }
+            last = "";
 
             chunk->sum_read_request_buffer[i_var] = {
                 var->addr->get_index_group(), var->addr->get_index_offset(),
diff --git a/adsApp/src/epics-ads/SumReadRequest.h b/adsApp/src/epics-ads/SumReadRequest.h
index 29c1d0c..ef8a188 100644
--- a/adsApp/src/epics-ads/SumReadRequest.h
+++ b/adsApp/src/epics-ads/SumReadRequest.h
@@ -10,6 +10,7 @@
 #include <memory>
 #include <cstdint>
 #include <utility>
+#include <string>
 
 #ifdef USE_TC_ADS
 #include <windows.h>
@@ -48,6 +49,7 @@ class SumReadRequest {
     /* Helper method returns a vector of chunks from chunks_by_ads_port_map */
     std::shared_ptr<std::vector<std::shared_ptr<ReadRequestChunk>>>
     get_chunks();
+    std::string last;
 
   public:
     /* Number of chunks, i.e. the number of sub-requests needed to sum-read all
diff --git a/adsApp/src/err.h b/adsApp/src/err.h
index e5c7871..25b740a 100644
--- a/adsApp/src/err.h
+++ b/adsApp/src/err.h
@@ -32,10 +32,10 @@
     LOG_MSG_ASYN(asyn_user, ASYN_TRACE_ERROR, "ERROR", format, ##__VA_ARGS__)
 
 #define LOG_WARN_ASYN(asyn_user, format, ...) \
-    LOG_MSG_ASYN(asyn_user, ASYN_TRACE_WARNING, "WARNING", format, ##__VA_ARGS__)
+    //LOG_MSG_ASYN(asyn_user, ASYN_TRACE_WARNING, "WARNING", format, ##__VA_ARGS__)
 
 #define LOG_TRACE_ASYN(asyn_user, format, ...) \
-    LOG_MSG_ASYN(asyn_user, ASYN_TRACE_FLOW, "TRACE", format, ##__VA_ARGS__)
+    //LOG_MSG_ASYN(asyn_user, ASYN_TRACE_FLOW, "TRACE", format, ##__VA_ARGS__)
 
 /* Error logging macros for use when asyn_user is not available */
 #define LOG_MSG(log_level_str, format, ...) \
@@ -45,10 +45,10 @@
     LOG_MSG("ERROR", format, ##__VA_ARGS__)
 
 #define LOG_WARN(format, ...) \
-    LOG_MSG("WARNING", format, ##__VA_ARGS__)
+    //LOG_MSG("WARNING", format, ##__VA_ARGS__)
 
 #define LOG_TRACE(format, ...) \
-    LOG_MSG("TRACE", format, ##__VA_ARGS__)
+    //LOG_MSG("TRACE", format, ##__VA_ARGS__)
 
 /* EPICS ADS specific return codes */
 #define EPICSADS_BASE 1000