6.5.2.5 KeyRevisionNumber (KRN)

Each SupplyGroup has one or more VendingKeys associated with it. A KRN uniquely identifies a VendingKey within the SupplyGroup. Together the SGC and KRN uniquely identify a VendingKey.

        每个SupplyGroup都有一个或多个与之相关联的vendingkey。KRN在SupplyGroup中唯一地标识一个VendingKey。SGC和KRN一起唯一地标识一个VendingKey。

The KRN is a single decimal digit with a range of 1 , 2, .. 9. The association between SGC,KRN, and VendingKey is set by the KMS. The first VendingKey for a SupplyGroup should be assigned KRN 1 ; successive VendingKeys are assigned successive revision numbers until KRN 9 at which state the sequence begins again at 1 . 

        KRN是一个十进制数字，范围是1、2、..9. SGC、KRN和VendingKey之间的关联是由KMS设置的。供应组的第一个VendingKey应分配KRN 1；连续的版本号分配给连续的版本号，直到KRN 9，此时序列从1开始。

At any given moment there may be no more than 9 successive VendingKey revisions present in a POS for a given SupplyGroup.

        在任何给定的时刻，一个给定的供应集团的POS中可能不超过9个连续的VendingKey修订。

A payment meter’s DecoderKey is associated with the SGC and KRN of the VendingKey from which it is derived. A payment meter is required to store the KRN associated with the DecoderKey, as passed in the key change token set (see also 7.3.2).

        支付计价器的解码器密钥与生成它的VendingKey的SGC和KRN相关联。付费表计需要存储与DecoderKey相关联的KRN，正如在密钥更改令牌集中传递的那样（参见7.3.2）。

The concept of key revision only applies to VDDK, VUDK and VCDK VendingKey types and DDTK, DUTK and DCTK DecoderKey types. A DITK shall not be associated with a KRN.

        密钥修订的概念仅适用于VDDK、VUDK和VCDK VendingKey类型和DDTK、DUTK和DCTK DecoderKey类型。DITK不得与KRN相关联。

All payment meters within a SupplyGroup should be set to the latest VendingKey for that SupplyGroup. This information is managed by the management system and if for any reason the KRN in the payment meter is not the same as the KRN of the latest VendingKey for the SupplyGroup as recorded in the management system, this condition shall be corrected by means of an appropriate change of the DecoderKey (see also 6.5.2.1 and C.1 3.2.4).

        一个供应组内的所有付费仪表都应该设置为该供应组的最新VendingKey。该信息由管理系统管理，如果由于任何原因，付款计价器中的KRN与管理系统中记录的供应组最新售货密钥的KRN不一致，则应通过适当更改解码器密钥来纠正这种情况（另见6.5.2.1和C.1 3.2.4）。

NOTE The KRN does not determine the latest VendingKey for a given SGC. This is managed by means of other control attributes such as active date and expiry date, which are outside the scope of this document. Examples of these may be found in STS 600-4-2, Standard Transfer Specification – Companion Specification – Key Management System (see Bibliography).

        注意，KRN并不确定给定SGC的最新VendingKey。这可以通过其他控制属性（如活动日期和过期日期）来管理，这些属性不在本文档的范围内。这些例子可以在STS 600-4-2，标准传输规范-同伴规范-密钥管理系统（见参考书目）中找到。