ABB Distributed Control System UFC092BE01 Automation controller DCS spare parts
Brand ABB Color Standard Application Industrial height 238mm rated current 470mA
Protection Level IP45 Suitable for motor power 476KW Application Site Power Industry BOM Number GJR2391500R1220 Power industry HIEE401782R0001 Part Number UFC092BE01
Applicable pipe 2 Whether imported is weighing 3.88 kg can be sold nationwide
ABB Distributed Control System UFC092BE01 Automation controller DCS spare parts
In the embedded debugging stage, in the case of abundant pin resources, I usually reserve an IO port to connect to the led or speaker, laying the groundwork for the next step of software writing. The IO interface is properly controlled during the operation of the embedded system, so as to judge whether the system runs normally.
Fourth, expand the storage device
If an embedded system has a power supply, crystal and CPU, then this is a small system that we are familiar with. If the embedded system needs to run a larger operating system, then not only the CPU needs to have MMU, the CPU also needs external SDRAM and NANDFLASH. If the cpu has SDRAM and NANDFLASH controllers, then the hardware design does not need to consider the use of address lines. If there is no associated controller, then you need to pay attention to the use of address lines.
This part is a key point in the LAYOUT, the reason is to make the relevant signal lines equal in length to ensure that the signal delay is equal, the clock and DQS differential signal line routing. Wiring skills need to be used comprehensively when wiring, such as symmetrical distribution with cpu, Daisy chain wiring, T-type wiring, which need to be selected according to the number of memory, generally speaking, the more the number, the more complex the wiring, but know its key points, easy to solve.
Fifth, functional interface
An important part of an embedded system is to control the peripheral module through the interface to achieve the purpose of the designer. Commonly used interfaces are serial ports (can be used to connect Bluetooth, wifi and 3G modules), USB interface, network interface, JTAG interface, audio and video interface, HDMI interface and so on. Because these interfaces are connected to external modules, it is important to do a good job of electromagnetic compatibility design. In addition, pay attention to the use of difference lines in LAYOUT.
ABB Distributed Control System UFC092BE01 Automation controller DCS spare parts
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