FindService entry

• Service ID shall be set to the Service ID of the service that shall be found.
  服務ID應設置為應找到的服務的Service ID

• Instance ID shall be set to 0xFFFF, if all Service Instances shall be returned.
  如果返回所有服務實例，則實例ID應設置為0xFFFF。
• It shall be set to the Instance ID of a specific Service Instance, if just a single Service Instance shall be returned.
  如果僅返回一個服務實例，則應將其設置為特定服務實例的Instance ID。

• Major Version shall be set to 0xFF, that means that services with any version shall be returned. If set to value different than 0xFF, services with this specific major version shall be returned only.
  主要版本應設置為0xFF，這意味著應返回任何版本的服務。如果設置為不同于0xFF的值，則至于具有此特定主版本的服務被返回。
• Note注意：
  It is expected that the Major Version on client side is configured to a specific value in normal operation since the client should look for an specific interface version. Different Major Versions are not compatible to each other.
  由于客戶端應該查找特定的接口版本，因此期望客戶端的主要版本在正常操作中配置為特定值。不同的主要版本互不兼容。

• Minor Version shall be set to 0xFFFF FFFF, that means that services with any version shall be returned. If set to a value different to 0xFFFF FFFF, services with this specific minor version shall be returned only.
  次要版本應設置為0xFFFF FFFF，這意味著應返回任何版本的服務。如果設置為不同于0xFFFF FFFF的值，則僅返回具有此特定次要版本的服務。
• Note注意：
  It is expected that the Minor Version on client side is configured to 0xFFFF FFFF in normal operation since the client should accept all different Minor Versions. Different Minor Versions shall be compatible to each other.
  由于客戶端應該接受所有不同的次要版本，所以希望客戶端的次要版本在正常操作中配置為0xFFFF FFFF。不同的次版本應該相互兼容。

• TTL shall be set according to the configuration.
  TTL應根據配置進行設置。
• If TTL is set to 0xFFFFFF, the SubscribeEventgroup entry shall be considered valid until shutdown (i.e. next reboot).
  如果TTL設置為0xFFFFFF，則SubscribeEventgroup條目應被視為有效，直至關閉（即下次重新啟動）。

• FindServer entries shall never reference Endpoint or Multicast Options. They shall reference configuration options, if configured to do so.
  FindServer條目不得引用Endpoint或Multicast option。他們應引用configuration options ，如果配置如此。