将从缓存文件中读取改成从内存数组中进行读取

gateway/cache_manager.py

@@ -645,7 +645,7 @@ class CacheManager:
                 plc_status = self.plc_connection_status.get(plc_name, "unknown")
                 return None, "Area is read-only", plc_status, 0
 
-            cache_file = f"{plc_name}_area_{area_name}.log"
+            array_name = f"{plc_name}_{area_name}"
 
             # 计算实际DB偏移
             db_offset = area["offset"] + offset
@@ -673,7 +673,7 @@ class CacheManager:
 
             try:
                 # 使用Snap7Client的read_generic方法
-                result = client.read_generic(area["db_number"], db_offset, data_type, cache_file, count)
+                result = client.read_generic(area["db_number"], db_offset, data_type, array_name, count)
                 if result is None:
                     return None, "Read failed", plc_status, 0