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WPF通过KEPServerEX 读取PLC 的DB块值

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按照自下而上的顺序一．PLC 的 DB 块设置 PLC 为西门子的 S7 1200 PLC CUP 地址设置为 192.168.1.3 DB 块号为 22 。 PLC 内容的设置我不会，同事帮忙设置，此处内容省略，设置如下图二、KEPServerEX 设置 KEPServerEX 为 6.4 简体中文版本新建点击新建弹出，如下图，点击是，更新 2 添加通道名称为设置为 TEST ，网络设备器选择自己设置的本机 IP 地址： 192.168.1.50 以后步骤全为默认。 3. 添加设备名称 Device PLC 选择 S1200 Ip 设置为 PLC 的 CPU IP 以后设置都为默认下一步到最后。 4.添加静态标记名称为 Tag_01, 地址为 DB22.X0.0 （之前 PLC 设置里面的第一个值，该值在 PLC 里面设置为间隔 1S 变化一次方便检测） 5. 点击 Quick Client 测试 KEPServerEX 通讯是否成功如果 TEST.Device.Tag_01 对应的 Quality 值为良好则为成功三、C# 编写简单客户端程，类似 Quick Client 的检测功能界面 (WPF) 前台代码 <Window x:Class="KEPClien.MainWindow" xmlns="http://schemas.microsoft.com

How can I inserting a string with a single quote in it into a DB2 table?

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问题 I'm using a DB2 database. How to insert ' (single quote) as data into a table. For example: Insert into EMP values ('Raju's kumar' , 10000) where the name has a ' (single quote). 回答1: try this (double quote) Insert into EMP values ('Raju''s kumar' , 10000) 来源： https://stackoverflow.com/questions/44174958/how-can-i-inserting-a-string-with-a-single-quote-in-it-into-a-db2-table

How can I inserting a string with a single quote in it into a DB2 table?

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VMware nat 模式配置Linux 系统上网

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vmare 网络配置查看到 NAT的网关虚拟机配置 Linux 内部网络配置主要注意配置网关，子网掩码需要重启网卡服务。 systemctl restart network 或 service network restart 配置dns 域名服务器参数 ping www.baidu.com 不行，就重启试试参考 https://blog.csdn.net/greatxiaoting/article/details/81488441 https://jingyan.baidu.com/article/75ab0bcb22b49b96874db247.html https://www.cnblogs.com/xwgcxk/p/10560073.html 总结 vmare 挺好用的，而且挺多破解版的。同时它的挂起功能真的很好用。处理速度也挺快的。来源： oschina 链接： https://my.oschina.net/ouminzy/blog/4951340

「PHP」- 连接SQL Server数据库 @20210208

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在PHP中，如果要连接SQL Server数据库，可以使用以下几种驱动： * **Mssql** * **PDO_SQLSRV (Windows only)** * **PDO_ODBC** * **SQLSRV** (Windows only) * Unified ODBC API 上述内容是复制于官网（03/11/2019）。但是，实际情况会更复杂一些，尤其是PDO_SQLSRV与SQLSRV，它俩不光是Windows only的。 # SQLSRV - Microsoft SQL Server Driver for PHP SQLSRV: http://php.net/manual/en/book.sqlsrv.php PHP -> SQLSRV -> SQLSERVER 在Windows上运行PHP时，该扩展允许您访问Microsoft SQL Server和SQL Azure数据库。版本3.0的驱动程序支持SQL Server（从SQL Server 2005开始，包括SQL Server 2012，SQL Server 2012 LocalDB）。有关LocalDB的更多信息，参考「 PHP Driver for SQL Server Support for LocalDB and » SQL Server 2012 Express LocalDB 」

db2 for i : passing a varchar containing comma separated string in an sql procedure in in clause

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问题 i have a string containing comma separated strings in java.. which i m passing to a sql procedure being called in java ... here is example of java string: String codeString = "'232/232','34fd/34//'"; code in sql db2 for i: create procedure history (in id varchar (3), in code varchar (2000)) ...... ...... begin insert into table1 select date_from, date_to, code from table2 where table2.serial= id and table2.status not in (code); end this sql procedure is inserting same string in table1.code

Pagination query(SQL) in AS400/DB2

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问题 I have been working on try to create php web-based paging for our tables which have over a million rows. Based on what I have read, I have 3 options retrieve all rows in resultset - not possiblefor me coz of the size retrieve 1000 rows, store in temp table and create an iterator for it and page through it - too many queries - too many inserts!! run a query each time if someone opts page forward or backwards Right now I am trying to get option 3 working. I have the first page showing up as

How to find ASCII of every character in string using DB2 Function?

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问题 I have written a function in DB2 - that is calculating ASCII of records in a particular column. I want to some help as I want to check the ASCII of every single character in string return yes if the ASCII of that record is greater than 127. BEGIN ATOMIC DECLARE POS, INT; IF INSTR IS NULL THEN RETURN NULL; END IF; SET ( POS, LEN )=( 1, LENGTH(INSTR) ); WHILE POS <= LEN DO IF ASCII( SUBSTR( INSTR, POS, 1 ))> 128 THEN RETURN 'Y'; END IF; SET POS = POS + 1; END WHILE; RETURN 'N'; 回答1: Why to

COM+ VB6 Application on 64 bit system: IBM CLI Driver transaction error when connecting to DB2

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问题 We are trying to migrate an Intranet Web Application, developed in VB6, from Windows Server 2003 to Windows Server 2008 R2 and we are facing a problem with two phase commit transactions between Microsoft SQL Server 2008 and DB2 on Z/OS Mainframe. On Windows Server 2008 R2 with DB2 v9.7.500.702 Fixpack 8 (64 bit) installed, the VB6 component registered in a COM+ application, when trying to update in transaction one table on SQL Server and another table on DB2, returns this error: [IBM][CLI

介绍两个刷 SQL 题的网站

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今天有朋友在群里问到：在哪可以刷 SQL 题？其实，要刷 SQL 题，对着《SQL COOKBOOK》、《SQL 经典实例》这两本书，把所有实例从头到尾全部实现一遍就很厉害了。不过，我想她的本意是想知道有没有关于 SQL 的 Online Judge（在线评测系统，简称 OJ）。相比算法，关于 SQL 的 OJ 确实是少之又少，我目前了解到的就有两个网站：一个是 LeetCode，另外一个是 HackerRank。 LeetCode LeetCode 的 SQL 题库中一共有 119 道题，题目的难度分为简单、中等、困难三个等级。图1 是题目列表，题目编号前面有锁的图标表示只有会员身份才能做题。图1 LeetCode 上的 SQL 题目列表任意选择一道可以回答的题目，点击它的链接将进入到题目详情和答题页，如图2 所示：左边栏是题目描述，右边是答题区。当你把答案写完，点击右下角的“执行代码”按钮，等待它返回结果。如果 SQL 没有出现语法错误，它返回的执行结果包含输入、输出和预测结果。图2 题目详情页当检查“输出”项和“预测结果”完全对得上时，就可以提交答案了，系统将给我们反馈 SQL 的整体的执行结果。图3 提交结果 HackerRank HackerRank 上有 58 道 SQL 题，题目也是分了简单、中等、困难三个级别。图4 HackerRank 的 SQL

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