FLOWSERVE 3HP 3450自动化工控设备

产品详细资料
控制COMMREQ功能块执行的逻辑程序COMMREQ必须通过一次触发启动，以防止COMMREQ在每次CPU扫描时重复执行，这将超出以太网接口的能力，并可能需要手动重新启动。在启动COMMREQ函数之前检查某些状态位也很重要。特别是，当以太网接口不可操作时，LAN接口OK位应用作联锁，以防止COMMREQ功能的执行。在信道上发起COMMREQ之后，在从以太网接口向程序返回非零CRS字之前，不应向该信道发出进一步的COMMREQ。10.2.6通信请求的操作图59：COMMREQ的分阶段操作说明了如何执行通信请求以完成从远程Modbus/TCP设备读取的数据。该图具体说明了数据读取的成功操作。
The Logic Program Controlling Execution of the COMMREQ Function Block The COMMREQ must be initiated by a one-shot to prevent the COMMREQ from being executed repeatedly each CPU scan, which would overrun the capability of the Ethernet interface and possibly require a manual restart. Checking certain status bits before initiating a COMMREQ function is also important. In particular, the LAN interface OK bit should be used as an interlock to prevent execution of the COMMREQ function when the Ethernet interface is not operational. Following initiation of a COMMREQ on a channel, no further COMMREQs should be issued to that channel until a non-zero CRS word has been returned to the program from the Ethernet interface. 10.2.6 Operation of the Communications Request Figure 59: Illustration of Phased Operation of a COMMREQ shows how Communications Requests are executed to complete a data read from the remote Modbus/TCP device. The figure specifically illustrates the successful operation of a data read.
主营产品简介
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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