CMA136-3DDE300416 ABB 发电机继电器接线板 转换器

产品参数

·品牌:ABB

型号:CMA136 3DDE300416输入电压:24VDC

输入电流:100mA输出电压:4-20mA·输出负载:≤500Q

ABB 3BSE022462R1 CMA136 3DDE300416控制总线的（怪物）状态机来处理,从角度来看，这个虚拟数据包FIFO旨在支持10Gb、4路以太网交换机。这意味着我希望能够在4个接口中的每一个上同时支持10Gb到达(和离开)。使用我们计划的硬件时，内存将以200MHz时钟运行，每个时钟周期读取(或写入)512位(64字节)数据。但是，10Gb 以太网交换机将每51.s ns生成一个512位字，或者(大致)在20OMHz下每11个时钟生成一次。因此，当界面全速运行时，我们将收到来自旋转控制器的请求。第一个控制器可能想要一个节拍，但是接下来的10个节拍不需要任何东西，而第二个控制器想要一个节拍，等等。

通常，我运行 Wishbone 的方式是将数据突发传输到总线(即内存)，然后在关闭接口之前等待响应。使用Xilinx的MIG时，这会占用20个时钟周期的延迟。如果我在这里这样做，我将永远没有足够的内存带宽来跟上。

我对这个问题的解决方案是使用一种特殊类型的互连——我首先为AXI项目开发的互连。使用此互连时，N个主机可以请求单个从机的总线访问。在这种情兄下，当每个总线主机发出请求时，主机的ID被放置在FIFO中。由于Wishbone请求总是按照收到的l顺序返回，因此我可以使用此FIFO将响应路由回适当的主机。这将允许我将来自多个主控的请求交织在一起，以便它们进入内存。

CMA136 3DDE30416是一款可靠性高、精度高的4-2ImA信号转换器，广泛应用于工业自动化控制系统中，用于将温度、压力、流量等物理星的信号转换成标准的4-20mA电流信号输出，可与PLC、DCS等控制器配合使用。适用于石油化工、制药、食品加工、水处理等领域。

CMA136-3DDE300416 ABB 发电机继电器接线板 转换器

Product parameter

· Brand :ABB

Model :CMA136 3DDE300416 Input voltage :24VDC

Input current :100mA Output voltage :4-20mA· Output load :≤500Q

ABB 3BSE022462R1 CMA136 3DDE300416 controls the bus's (monster) state machine to handle, from a perspective, this virtual packet FIFO is designed to support 10Gb, 4-way Ethernet switches. That means I want to be able to support 10Gb arrivals (and departures) at the same time on each of the four interfaces. With our planned hardware, the memory will run on a 200MHz clock, reading (or writing)512 bits (64 bytes) of data per clock cycle. However, a 10Gb Ethernet switch will generate a 512-bit word every 51.s ns, or (roughly) every 11 clocks at 20OMHz. Therefore, when the interface is running at full speed, we will receive a request from the rotation controller. The first controller might want one beat, but the next 10 beats don't need anything, while the second controller wants one beat, and so on.

Normally, the way I run Wishbone is to burst data into the bus (i.e. memory) and then wait for a response before closing the interface. With Xilinx's MIG, this takes up 20 clock cycles of latency. If I did that here, I would never have enough memory bandwidth to keep up.

My solution to this problem is to use a special type of interconnect - the one I first developed for the AXI project. With this interconnect, N hosts can request bus access from a single slave. In this case, when each bus host makes a request, the host ID is placed in the FIFO. Since Wishbone requests are always returned in the order of l received, I can use this FIFO to route the response back to the appropriate host. This will allow me to interweave requests from multiple masters so that they get into memory.

CMA136 3DDE30416 is a high reliability, high precision 4-2ImA signal converter, widely used in industrial automation control systems, used to convert temperature, pressure, flow and other physical star signals into standard 4-20mA current signal output, can be used with PLC, DCS and other controllers. Suitable for petrochemical, pharmaceutical, food processing, water treatment and other fields.