开启主机级联扫描打印

因smartPDU更新频繁，将其从仓库移除

pro/src/cascade.c

@@ -592,7 +592,7 @@ static int master_scan(cascade_handle_t *cas)
             slave_add(cas, cas->scanAddr);
         }
         else {
-            //LOGW("____ scan %d fail, %s\n", cas->scanAddr, modbus_strerror(errno));
+            LOGW("____ scan %d fail, %s\n", cas->scanAddr, modbus_strerror(errno));
         }
     }
     cas->scanAddr++;