DCS模块KJ3222X1-BA1PLC控制器DCS备件

产品标题: DCS模块KJ3222X1-BA1PLC控制器DCS备件

型号：KJ3222X1-BA1PLC

品牌：艾默生

                                               产品详情资料：

如果VMEbus从属映射解码器被禁用并遵循以下程序，则可以对其进行编程，而无需获得VMEbus主控权。应首先对地址转换寄存器、起始和结束地址寄存器进行编程，然后通过对地址修改器选择寄存器进行编程来启用映射解码器。VMEbus到本地总线接口允许非车载VMEbus主机访问本地车载资源。从VMEbus看到的本地资源的地址由VMEbus从属映射解码器控制，VMEbus从映射解码器是VMEbus到本地总线接口的一部分。VMEcchip2中的两个VMEbus从属映射解码器允许将VMEbus的两个段映射到本地总线。段的大小可以从64KB到4GB不等，增量为64KB。地址转换由地址转换寄存器提供，地址转换寄存器允许由地址转换地址寄存器而不是VMEbus的高16位提供本地总线地址的高16比特。

                                                产品英文详情料:

The VMEbus slave map decoders can be programmed, without obtaining VMEbus mastership, if they are disabled and the following procedure is followed. The address translation registers, starting and ending address registers should be programmed first, and then the map decoders should be enabled by programming the address modifier select registers. The VMEbus to local bus interface allows offboard VMEbus masters access to local onboard resources. The address of the local resources as viewed from the VMEbus is controlled by the VMEbus slave map decoders, which are part of the VMEbus to local bus interface. Two VMEbus slave map decoders in the VMEchip2 allow two segments of the VMEbus to be mapped to the local bus. A segment may vary in size from 64KB to 4GB in increments of 64KB. Address translation is provided by the address translation registers which allow the upper 16 bits of the local bus address to be provided by the address translation address register rather than the upper 16 bits of the VMEbus.