PM851AK01輸入控制器
ICT模塊有足夠的內(nèi)存它可以存儲(chǔ)多達(dá)30000個(gè)點(diǎn)定義（取決于點(diǎn)類型）。ICT模塊固件使主機(jī)能夠發(fā)出數(shù)據(jù)采集、過程監(jiān)控和控制以及系統(tǒng)功能（安全、時(shí)間和配置控制）的命令。ICT模塊維護(hù)點(diǎn)表并解釋來自主機(jī)的命令。因此，它指導(dǎo)主機(jī)和INFI-NET系統(tǒng)之間的所有交互。ICT模塊從INFI 90模塊接收數(shù)據(jù)，然后對(duì)數(shù)據(jù)進(jìn)行分類、組織和存儲(chǔ)在數(shù)據(jù)庫(kù)中。NIS模塊從INFI-NET系統(tǒng)接收幀，并將其傳遞給ICT模塊進(jìn)行處理。然后，信通技術(shù)模塊對(duì)這些輸入數(shù)據(jù)進(jìn)行分類，存儲(chǔ)異常報(bào)告和輸入請(qǐng)求，直到主機(jī)準(zhǔn)備好接收數(shù)據(jù)。此緩沖操作允許主機(jī)完全與INFI-NET循環(huán)異步操作。當(dāng)主機(jī)準(zhǔn)備好處理更多數(shù)據(jù)時(shí)，它向信通技術(shù)模塊發(fā)出命令，將數(shù)據(jù)作為答復(fù)轉(zhuǎn)發(fā)。MPI模塊為ICT模塊提供串行端口和SCSI接口。它包含SCSI和RS-232-C I/O端口。計(jì)算機(jī)傳輸模塊從主機(jī)接收命令，執(zhí)行所需操作，然后回復(fù)主機(jī)。計(jì)算機(jī)接口使用80多個(gè)命令進(jìn)行數(shù)據(jù)采集、過程監(jiān)控和系統(tǒng)功能（安全、時(shí)間、配置）。這些命令分為四種基本命令類型：數(shù)據(jù)采集、配置、過程控制和系統(tǒng)狀態(tài)。
數(shù)據(jù)采集
主機(jī)使用ESTABLISH POINT和ESTABLIS REPORT命令在ICT模塊中建立數(shù)據(jù)庫(kù)。該數(shù)據(jù)庫(kù)的容量為10000點(diǎn)（INICI01）或30000點(diǎn)（INCII03），具體取決于點(diǎn)類型。主機(jī)可通過數(shù)據(jù)采集命令訪問信通技術(shù)模塊數(shù)據(jù)庫(kù)?？梢酝ㄟ^trend DATA POLL命令讀取系統(tǒng)中配置的任何趨勢(shì)塊。計(jì)算機(jī)接口可用于將控制策略配置下載到INFI 90模塊。此外，TUNE BLOCK和READ BLOCK OUTPUT命令用于調(diào)諧和監(jiān)控輸出。進(jìn)程控制命令列表為主機(jī)提供進(jìn)程控制功能。主機(jī)能夠處理模擬和數(shù)字過程要求，例如改變?cè)O(shè)定點(diǎn)和控制輸出，將數(shù)據(jù)值作為異常報(bào)告提供給INFI 90模塊塊，控制和設(shè)置數(shù)字遠(yuǎn)程開關(guān)和常數(shù)。系統(tǒng)狀態(tài)時(shí)間同步是計(jì)算機(jī)接口的關(guān)鍵功能，也是整體狀態(tài)的一部分。它使主計(jì)算機(jī)能夠設(shè)置和顯示系統(tǒng)時(shí)間和日期，并提供了將時(shí)間戳與系統(tǒng)時(shí)間和數(shù)據(jù)關(guān)聯(lián)的機(jī)制。主機(jī)能夠監(jiān)控各個(gè)模塊的狀態(tài)并提供密碼保護(hù)。
The ICT module has enough memory
that it can store up to 30,000 point definitions (depending on point types). ICT module firmware enables the host computer to issue commands for data acquisition, process monitoring and control, and system functions (security, time and configuration control). The ICT module maintains the point table and interprets commands coming from the host computer. Thus, it directs all interaction between the host computer and the INFI-NET system. The ICT module receives data from INFI 90 modules and then sorts, organizes and stores the data in a database. The NIS module receives frames from the INFI-NET system and passes them on to the ICT module for processing. The ICT module then sorts this incoming data, storing exception reports and incoming requests until the host computer is ready for the data. This buffering action allows the host computer to operate completely asynchronously to the INFI-NET loop. When the host computer is ready to process more data, it issues a command to the ICT module that forwards the data as a reply. The MPI module provides the ICT module with serial ports and a SCSI interface. It contains SCSI and RS-232-C I/O ports.The computer transfer modules receive a command from a host computer, perform the desired action, and then reply to the host computer. The computer interface uses over 80 commands for data acquisition, process monitoring and control, and system functions (security, time, configuration). These commands fall into four basic command types: data acquisition, configuration, process control, and system status.
Data Acquisition
The host computer uses the ESTABLISH POINT and ESTABLISH REPORT commands to establish a database in the ICT modules. This database has the capacity for 10,000 points (INICI01) or 30,000 points (INICI03), depending on point types. The host computer has access to the ICT module database through data acquisition commands. Any trend block configured in the system can be read through the TREND DATA POLL command.The computer interfaces can be used to download control strategy configurations to INFI 90 modules. Also, the TUNE BLOCK and READ BLOCK OUTPUT commands are used to tune and monitor outputs. Process Control The command list provides process control abilities for the host computer. The host computer is able to handle analog and digital process requirements such as changing setpoints and control outputs, supplying data values to INFI 90 module blocks as exception reports, controlling and setting digital remote switches and constants. System Status Time synchronization is a critical function of the computer interfaces and part of overall status. It enables the host computer to set and display system time and date, and provides a mechanism for relating the time stamp to system time and date. The host computer is able to monitor individual module statuses and provide password protection.
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