In the State Grid Enterprise Standard (Q/GDW), published by SGCC, the standard Q/GDW 11179.11-2015 covers the technical specification of components for electricity meters. The document is published with the intention to promote smart e-meters and electricity information acquisition systems. Part 11...
RS232TORS485 异步双向转换器用户指南说明书 RS232TO RS485User Manual Revision:V1.0,Date ：202006201RS232TO RS485User Manual This is a RS232vs RS485asynchronous bidirectional convertor,which features electromagnet isolation.The internal TVS bidirectional transient suppression diode and detonator to ...
Figure 1 shows the 8 kV contact discharge current waveform as described in the specification. Some of the key waveform parameters are rise times of less than 1 ns and pulse widths of approximately 60 ns. This equates to a pulse with a total energy in the range of 10’s of mJ. Figure...
RS485 是美国电子工业协会(Electronic Industries Association,EIA)于1983年发布的串行通信接口标准,经通讯工业协会(TIA)修订后命名为 TIA/EIA-485-A。 RS485 是一种工业控制环境中常用的通讯协议,其中RS 是 Recommended Standard 的缩写。 RS485 是 半双工异步 串行通信。 特点 支持多节点:一般最大支持 32 个节点。
RS485 是一种工业控制环境中常用的通讯协议,其中RS 是 Recommended Standard 的缩写。 RS485 是 半双工异步 串行通信。 特点 支持多节点:一般最大支持 32 个节点。 传输距离远:最远通讯距离可达1200米。 抗干扰能力强:差分信号传输。 连接简单:只需要两根信号线(A+和B-)就可以进行正常的通信。
1 Introduction 2 Specification 3 Pin Definition 4 Simple Application 4.1 Use Setups 4.2 Sample Code Introduction This is a RS485 shield,especially designed for the Arduino controller board. It can easily convert the UART to the RS485. This shield integrates a standard RS485 port ,a mini RS485...
Specification Details Measurement Range NH4N:0.1-1000 mg/L K+:0.5-1000 mg/L(Optional)pH:5-10Temperature:0-40ºC Resolution NH4N:0.01 mg/lK+:0.01 mg/l(Optional)Temperature:0.1ºCpH:0.01 Measurement Accuracy NH4N:±5 % of the measured value or ± 0.2 mg/L, take the great...
Specification 2kg Trademark Holykell Origin Hunan, China (Mainland) Production Capacity 30000pieces/Month Packaging & Delivery Package Size 32.00cm * 32.00cm * 28.00cm Package Gross Weight 3.000kg Product Description Product Description HR2000 is a hi...
Specification After-sales Services Product Name:Din Rail RS485 to WiFi Converters Model:USR-DR404 USR-DR404 RS485 to Wi-Fi/Ethernet Converter USR-DR404 is a device that can realize data communication between RS485 and Ethernet/Wi-Fi. Through this device, the communication between the on-...
RS485 Length Specification FEATURES APPLICATIONS n Very Low Power: I CC = 110µA Typ n Designed for RS485 or RS422 Applications n Single 5V Supply n –7V to 12V Bus Common-Mode Range Permits ±7V GND Difference Between Devices on the Bus n Thermal Shutdown Protection n Power-Up...