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通訊接口轉(zhuǎn)換模塊

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聯(lián)系我們

地址：北京市昌平區(qū)回龍觀北京國際信息產(chǎn)業(yè)基地發(fā)展路1號院（集智達大廈5層）

郵編：102206

電話：010-81909399

傳真：010-81909456

網(wǎng)址：http://www.liujiqiang.com

E-mail：marketing@gemotech.cn

R-8520A/R-8520AR

隔離的RS-232轉(zhuǎn)RS-422/485模塊

◆ 一端為RS-232，另一端為RS-422/485
◆ 含“自適應”電路
◆ 速度：300～115.2Kbps
◆ 3000V隔離
◆ 支持多種速率多種數(shù)據(jù)格式
◆ 通信距離：2.1Km/9600bps;2.7Km/4800bps;3.6Km/2400bps
◆ R-8520A的隔離端在RS-232口,
　 R-8520AR的隔離端在RS-422/485口

產(chǎn)品型錄

產(chǎn)品介紹
產(chǎn)品規(guī)格
檔案下載

隔離的RS-232轉(zhuǎn)RS-422/485模塊

Driver

日期	說明	版本	操作系統(tǒng)	下載

Manual

日期	說明	版本	操作系統(tǒng)	下載

基本文件流程錯誤 SQL 調(diào)試

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/usr/home/qyu61771/htdocs/Application/Common/Behavior/CheckThemeBehavior.class.php ( 2.87 KB )
/usr/home/qyu61771/htdocs/ThinkPHP/Library/Think/Template.class.php ( 27.73 KB )
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/usr/home/qyu61771/htdocs/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.14 KB )

1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') ) LIMIT 4' at line 1 [ SQL語句 ] : SELECT * FROM `fc_article` WHERE ( `article_id` IN () ) LIMIT 4
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SHOW COLUMNS FROM `fc_picture` [ RunTime:0.000953s ]
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SELECT * FROM `fc_article_cat` WHERE ( `cat_id` = 98 ) LIMIT 1 [ RunTime:0.000528s ]
SELECT * FROM `fc_article` WHERE ( `cat_id` = 98 ) [ RunTime:0.001906s ]
SELECT * FROM `fc_article` WHERE ( `cat_id` = 98 ) AND ( `article_id` <> '947' ) ORDER BY sort asc,add_time desc LIMIT 20 [ RunTime:0.001657s ]
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SELECT * FROM `fc_article_cat` WHERE ( `cat_id` IN ('0','2','10','98') ) ORDER BY level asc [ RunTime:0.000458s ]
SELECT * FROM `fc_article_cat` WHERE ( `cat_id` = 4 ) LIMIT 1 [ RunTime:0.000550s ]
SELECT `cat_id` FROM `fc_article_cat` WHERE ( `npath` LIKE '0,4,%' ) [ RunTime:0.000439s ]
SELECT * FROM `fc_article` WHERE ( `cat_id` IN ('26','27','28','4') ) ORDER BY sort desc,add_time desc LIMIT 6 [ RunTime:0.001006s ]
SELECT `cat_id` FROM `fc_article` WHERE ( `article_id` = 947 ) LIMIT 1 [ RunTime:0.000559s ]
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R-8520A/R-8520AR

Driver

Manual