产品详细资料
如果PLC CPU试图将COMMREQ发送到以太网接口的速度快于以太网接口可以接收它们的速度,COMMREQ功能块的FT输出将被设置,CPU将在PLC故障表中生成以下条目:“邮箱队列已满–COMMREQ中止PLC逻辑程序应在短延迟后发送重试COMMREQ。8.4.3管理信道和TCP连接当您发出COMMREQ以建立读或写信道时,会创建TCP连接,传输则在完成所有传输后,TCP连接终止。创建和终止这些连接需要时间。如果一个应用程序被构造为只需一次重复(一次传输)就可以快速重复地建立信道,那么以太网接口的可用TCP连接可能会被完全消耗掉。TCP连接状态的“快照”将显示其中一些正在创建,一些正在终止,还有一些处于活动状态,但没有可用的连接。注意:在某些情况下,TCP连接可能会完全消耗
If the PLC CPU attempts to send COMMREQs to the Ethernet interface faster than the Ethernet interface can receive them, the FT output of the COMMREQ function block will be set and the CPU will generate the following entry in the PLC Fault Table: “Mailbox queue full – COMMREQ aborted The PLC logic program should send retry the COMMREQ after a short delay. 8.4.3 Managing Channels and TCP Connections When you issue a COMMREQ to establish a read or write channel, a TCP connection is created, the transfer(s) are made, then upon completion of all the transfers, the TCP connection is terminated. It takes time to create and to terminate these connections. If an application is constructed so that it rapidly and repeatedly establishes a channel with only one repetition (one transfer), the available TCP connections for the Ethernet interface may be totally consumed. A “snapshot” of the state of the TCP connections would show some of them being created, some being terminated, and some active, but none available. CAUTION In Certain Conditions TCP Connections Can Be Totally Consumed
主营产品简介
专注于DCS、PLC、机器人控制系统、大型伺服四大系统领域。
主营产品各种模块/卡件,控制器,触摸屏,伺服驱动器。
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主营品牌包括 ABB贝利、GE/FUANC、FOXBORO、英维思TRICONEX 、本特利BENTLY、A-B罗克韦尔、艾默生EMERSON 、OVATION、MOTOROLA、XYVOM、霍尼韦尔HONEYWELL 、力士乐REXROTH、KUKA、NI、DEIF、横河、伍德沃德WOODWARD、瑞恩、施耐德SCHNEIDER 、安川、 穆格MOOG、PROSOFT等品牌。
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●使用前:
在操作和维护,安装设备之前,请阅读并严格遵守安全相关的信息。
Read and strictly follow safety-related information before operatingmaintainingand installing equipment.
●使用者要求:
必须从事安装,组装或维护设备等相关工控电气机械以及其他相关技术的人员。
Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.应用范围:
应用于品牌本系列工业以及生产生活自动化设备产品。
Used in the brand of this series of industriaand production automation eauipment products
适用于场景:系统集成,非标定制,产线升级改造,原设备电气替换等等。
Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.
●操作人员:
应该由本品牌专业培训操作员来安装、操作和维修设备。专业人员具有技术能力强,熟悉安全信息和安全实施:
熟悉设备的安装加工、操作和维护:熟悉处理所有的潜在危险情况。
Equipment should be installed,operated and maintained by trained operators from the brand
●危险情况
警告
.请注意使用人员的人身安全。
●除了产品特性以及功能,还需了解产品的使用寿命环境。
●充分学习产品使用手册,否则非专业人员可能会造成人身危险。
Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.
●服务行业
适用水泥,木业,石业,橡胶,石油,化工,发电,环保,水处理,制冷,交通,钢铁,食品,饮料,船舶,制冷等行业
Applicable to cementwood,stone,rubber,petroleumchemical, power generation