IoT Protocol -- 电力 101,104 协议

2023-02-20. Category & Tags: IoT, 101, 104, TCP, Ethernet, Emulator, Simulator

理论 # 洪城小电工 on 简书 # 从零开始理解 IEC104 协议之一 104 规约帧格式, bak 从零开始理解 IEC104 协议之二 基础知识, bak 从零开始理解 IEC104 协议之三 主要过程中的一些技术细节, bak 从零开始理解 IEC104 协议之四 工程调试经验总结, bak 从零开始理解 IEC104 协议之五 数据安全, bak 工具 # 经典、简约的 101 和 104 主站、从站模拟器 # PMA 使用方法 by forum.huawei, bak 101_104_MASTER, bak 其他 # 看起来比较不错的一款收费软件 CNY55~70(没有试过)

IoT Edge Deep Learning Neural Network Accelerators

2021-11-25. Category & Tags: Deep Learning, IoT, Edge, TPU, NCS, NCS2

Coral Edge Accelerator # ML accelerator: Edge TPU ASIC (application-specific integrated circuit) designed by Google. Provides high-performance ML inferencing for TensorFlow Lite Models. USB 3.1 (gen 1) port and cable (SuperSpeed, 5Gb/s transfer speed) Dimensions: 30 x 65 x 8mm Price: USD74.99 in 2019, USD $ 60 in 2021, ¥ 740 0.5 watts/TOPS MAX 4 TOPS (int8), 2W. TF Lite + Debian only. Not available world wide Intel NCS2 Neural Compute Stick 2 # Processor: Intel Movidius Myriad X Vision Processing Unit (VPU) USB 3. ...

IoT Protocol -- Modbus

2021-02-20. Category & Tags: IoT, Modbus, RS232, RS485, RS422, Serial, COM, CAN1939, MQTT, Emulator, Simulator

OSI vs. Modbus Layers: Tip: RS-485/RS485’s new name is EIA-485. Modbus Protocol # See Also: 【strongly recommend!】 a nice intro to Modbus and Modbus Enron. (Simply Modbus 软件收费,但是这个 Modbus 入门文档非常好) 一文看懂 Modbus 协议 Complete Modbus Guide. a good intro to Modbus. Each Modbus Slave has 4 tables with 9999 values in each table. Coil/Register Number (//≈index) Data Addresses RW Type Table (//Abbreviation &) Name 1-9999 0000 ~ 270E Read-Write (DO) Discrete Output Coils 10001-19999 0000 ~ 270E Read-Only (DI) Discrete Input Contacts 30001-39999 0000 ~ 270E Read-Only (AI) Analog Input Registers 40001-49999 0000 ~ 270E Read-Write (AO) Analog Output Holding Registers 注意! Output is writable, input is read-only. ...


2021-02-20. Category & Tags: MQTT, IoT

Server example: Apache ActiveMq (ref, bak). activemq-admin.bat create mybroker cd mybroker/bin/ mybroker.bat start Client: MQTTX, Chrome MQTTBox, etc. See more servers/clients/tools/libs here: HiveMq