本套系列程序最初在2004年4月完成，包括“3°、6°带高斯-克吕格投影正反转换程序”、“墨卡托投影正反转换程序”及“兰勃特等角投影正反转换程序”。2005年3月根据用户反馈作了更新，更新后增加了“UTM投影正反转换程序”，其中包括UTM直接转高斯-克吕格投影的功能，更新后反投影精度提高，反算能完全精确到小数后六位的度。2005年4月根据北京航遥一用户需求增加了“Albers等面积投影正、反转换程序”。2006年11月根据大连环境检测中心一用户要求增加了“UTM与墨卡托投影正反转换程序”，用于多波束数据的坐标转换。
2023-01-10 22:41:57
1.92MB
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安川-Varispeed G7系列使用说明书pdf,安川-Varispeed G7系列使用说明书
数字式操作器和前外罩的拆卸和安装
1、当为 15kW 以下的变频器时
在安装选购电路板及切换端子电路板上的跳线时，除了要拆下上述的端子外罩，还要卸下数字式操作
器和前外罩。在卸下前外罩以前，请先将数字式操作器从前外罩上拆下。
以下对拆卸和安装方法进行说明。
1).数字式操作器的拆卸
将数字式操作器侧面的把手沿着 1 的方向按下，使其与前外罩脱开，并沿 2 的方向抬起。
2).前外罩的拆卸
将前外罩左右的侧面部分沿着 1 的方向按下的同时 , 将外罩沿 2 的方向抬起。
3).前外罩的安装
端子排的接线作业完成后，请按照与拆卸时相反的顺序来安装前外罩。
1. 请确认数字式操作器没有装在前外罩上。如果在带着数字式操作器的状态下安装前外罩，将会引起
接触不良。
2. 将前外罩上部的卡爪卡入变频器主体的沟槽内，再向主体侧按下前外罩的下部，直到听到“咔嚓”
一声为止。
4).数字式操作器的安装
在完成前外罩的安装后，请按照以下步骤安装数字式操作器。
1. 从 1 的方向将数字式操作器挂在卡爪 A （两处）上。
2. 接着向 2 个方向按下，直到听到 “咔嚓”一声，将其挂在卡爪 B （两处）上。
如果需要了解更多，请点击http://anchuan123.gongboshi.com
2023-01-10 15:42:49
27.99MB
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Keyence_LJ-X8000 系列 2D_3D 线激光测量仪产品
2023-01-09 20:18:53
7.76MB
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资源是三菱Q系列的圆形编程口通讯的VB.NET和C#代码；
兼容所有Windows的x86、x64系统，支持多线程；
无需PLC内编程配置，知道数据地址即可读写数据；
支持16位有符号、无符号数据，32位有符号整数、浮点数，十六进制字符、二进制字符串;
2023-01-09 17:43:56
427KB
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目录
第一篇 Linux 基础 ··············································································1
第 1 章 Linux 操作系统简介 ·································································2
1.1 Linux 内核·····················································································2
1.1.1 简介·······················································································2
1.1.2 特点·······················································································3
1.1.3 内核版本号 ·············································································5
1.1.4 组成部分·················································································6
1.2 Linux 发行版··················································································9
1.3 嵌入式 Linux················································································12
1.3.1 嵌入式 Linux 的特点································································12
1.3.2 嵌入式 Linux 的产品形态··························································12
第 2 章 安装 Linux 操作系统 ·······························································14
2.1 获得 Linux 环境的三种方式·····························································14
2.2 发行版选择和 ISO 下载 ··································································15
2.3 VMware Player 软件·······································································16
2.3.1 下载和安装 ···········································································16
2.3.2 设置虚拟化支持 ·····································································18
2.4 使用现成的虚拟机 ········································································19
2.5 创建和配置虚拟机 ········································································23
2.5.1 创建虚拟机 ···········································································23
2.5.2 虚拟机设置 ···········································································26
2.6 安装 Ubuntu·················································································28
2.6.1 实体机安装前准备 ··································································28
2.6.2 虚拟机安装前准备 ··································································30
2.6.3 正式安装 Ubuntu·····································································32
2.7 初识 Ubuntu·················································································36
2.7.1 Ubuntu 桌面···········································································36
2.7.2 输入法··················································································37
2.7.3 系统设置···············································································37
2023-01-08 15:36:13
20.59MB
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IIC 通信协议详解
IIC（Inter-Integrated Circuit BUS) 集成电路总线。
1，物理层：
设备之间连接方式
IIC的物理特性：
1）IIC通信在控制上是一主多从的模式。
2）IIC由sda/scl两条通信线构成。
scl是串行时钟线，用来控制通讯的时钟频率实现数据收发同步；sda是双向串行数据线，用来控制协议中数据的传输。
3） 总线上拉电阻接到电源。I2C 设备空闲时，输出高阻态，当所有设备都空闲，总线呈现高电平状态。
4)总线上每个设备都有自己的地址，设备的地址可以进行重置。根据地址不同，可以实现选择不同设备进行通信。
6）当多个主机同时使用总线时，利用
2023-01-08 11:12:26
344KB
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资料内容主要为浙江德欧电气技术股份有限公司生产的C7总线系列交流伺服驱动器 设计调试手册，其中主要内容包括安装， 功能概述， 接线， 接口说明， 参数 ，调试应用， 故障诊断 ，以及伺服电机部分的说明。
2023-01-07 11:06:52
3.88MB
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SPI是Sysnchronous Serial Peripheral Interface 的缩写。SPI是一种全双工、高速、同步的通信总线，有两种操作模式：主模式和从模式。所谓全双工是指SPI主器件在向从器件发送数据的同时，也读取（或者接收从器件）的数据，从器件接收主器件数据的同时也向主器件发送数据。STC15W系列部分单片机内部集成了SPI总线接口。SPI总线在嵌入式系统中非常重要，如多片单片机间通信，SPI flash存储芯片的数据读写等。本压缩包为STC15系列单片机SPI库函数源码。
2023-01-07 05:26:59
21KB
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S2750&S5700;&S6700; 系列以太网交换机 V200R003(C00&C02;&C10;) 产品文档 08
2023-01-06 23:12:31
84.61MB
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