YOKOGAWA橫河 SNT401-53 光學總線重復模塊功能說明

生產廠家：YOKOGAWA橫河

產品型號：SNT401-53

產品類型：光學總線重復模塊

Alarm Processing報警處理

Alarm processing performs various types of alarm check during input

processing,calculation processing and output processing in order to detect a

process error. When an error is detected, the alarm processing reflects the

detection of an alarm in the “alarm status" that is one of the data items of the

function block, and also notifies a message indicating the detection result to

the operation and monitoring.報警處理執行輸入處理，計算處理及輸出處理過程中的各種報警檢查以便發現處理的錯誤。當一個錯誤被發現，報警處理以報警狀態形式反映出檢測到的報警，報警狀態為功能塊的一個數據項，并且通知監控一個指示檢測結果的信息。

Data Items數據項

A function block retains various data according to the type of the function block

in a database, which includes setup parameters and variable data that may be

referenced or set during the operation. Abbreviated names that are assigned

to these set parameters and variable data are generically called “data items."

For instance, the function block can perform calculation processing based on a

specific data item value and can reflect that processing result in another data

item.一個功能塊根據功能塊的類型在數據庫中保持各種數據，包括在操作過程中可能會引用或設置的調整參數和變量。

The controls of the function block, such as“MAN"(manual) and “AUT" (auto),

and the “block mode"that indicates the output status are some of the data

items.功能塊的控制，例如手動和自動和指示輸出狀態的塊模式都是一些數據項。

Main data items are as follows:以下是主要的數據項

.Block mode (MODE)塊模式

.Block status(BSTS)塊狀態

·Alarm status(ALRM)報警狀態

Process variable (PV)過程變量

·Setpoint value (SV)設定值

·Manipulated output value (MV)輸出值

C2.I/O Connection I/O連接By performing the l/O connection, data can be exchanged between a function block and the connection destination according to the connection method當執行I/O連接時，數據依照連接方式能在功能塊和連接目標間進行交換。

Connection Destination of I/O ConnectionI/O連接的連接目標With I/O connection, the destination and method of connection for each I/O terminalof a function block is specified. When the I/O connection is performed,process I/O,software I/O,communicationI/O, fieldbus I/O and other function blocks can bespecified as the connection destination of the function block's I/O terminal.I/O連接中，一個功能塊的的每個I/O端子的連接目標和方式都是的。當I/O連接執行時，處理接口，軟件接口，通訊接口，總線接口及其他功能塊可被為功能塊的I/O端子的連接目標。

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