集散控制系統(tǒng)PPD517 3BHE041576R3011的組成
當可選的LIL已安裝通信板。他們允許控制器從其他站點獲取全局數(shù)據(jù)麗爾。所有區(qū)塊編號按以下順序分配：每一次使用都是全站性的。在LIL中接收數(shù)據(jù)標準范圍為$80到$F80的格式。塊輸出為實數(shù)，以工程單位進行縮放使用最小和最大比例參數(shù)。輸出范圍是一種特殊的數(shù)據(jù)類型，包括最小值和最大刻度、DPP和ENG單位連接到具有范圍（RG PTR）的其他塊輸入輸出QS指示接收數(shù)據(jù)的量，以及當數(shù)據(jù)不好時，將變高（1）。這通常是與由于LIL而無法接收全局數(shù)據(jù)相關源的故障或錯誤配置。
可以將AIL功能分配給單個LIL信道。然后，它將具有可通過訪問的特定數(shù)據(jù)LIL。參數(shù)1是$80-$F80格式的接收數(shù)據(jù)（RD），該站將在分配的頻道。此LIL CHAN參數(shù)也可以設置為0。控制器仍將接收全局數(shù)據(jù)
但是所接收的數(shù)據(jù)將不被重新發(fā)送，并且其它信道數(shù)據(jù)（即，…）將不可訪問。AIN_功能塊轉(zhuǎn)換電壓輸入，具有校準期間定義的范圍，轉(zhuǎn)換為塊輸出信號
以工程單位進行縮放。輸出為：與內(nèi)部的其他功能塊互連控制器。
可以輸入6個字符的ASCII值來標識輸出信號的工程單位?？s放輸出范圍是可配置的，出廠默認值為0.0到100.0 PRCT。范圍，例如300.0到500.0，表示也可以配置以攝氏度為單位的工程單位。
輸出范圍是一種特殊的數(shù)據(jù)類型，包括最小和最大刻度、DPP和ENG單位可以連接到具有范圍（RG）的其他塊PTR）輸入。
MPU控制器上有模擬輸入塊
板（CB）和I/O擴展板（EB）上。區(qū)塊名稱（ID）與案例一起在第8.4節(jié)中列出后端子號。雙線發(fā)射器的電源可在后端子上使用。
數(shù)字濾波器（時間常數(shù)）可用于抑制過程噪聲。平方根提取器也可用于：
線性化來自?P變送器，允許為流量單元配置塊輸出。輸出QS
指示模擬輸出信號O1的質(zhì)量，當輸出O1不好時為高（1），當輸出O2不好時，為低（0）
好的質(zhì)量差表示A/D轉(zhuǎn)換失敗或1-5Vdc輸入信號低于0.6VDC，表示：雙線發(fā)射器的開路或故障。
AIL_ function blocks are available when the optional LIL
communication board is installed. They allow the
controller to obtain global data from other stations on the
LIL. AIL block numbers are assigned in sequence with
each use, station wide. The data is received in the LIL
format having a standard range of $80 to $F80. The block
output is a real number and is scaled in engineering units
using the MIN and MAX SCALE parameters. The Output
Range is a special data type that includes the MIN and
MAX SCALE, the DPP, and the ENGUNITS that can be
connected to other blocks having a Range (RG PTR)
input.
Output QS indicates the quality of the received data and
will go high (1) when the data is bad. This is normally
associated with failure to receive global data due to a LIL
failure or a misconfiguration of the source.
The AIL function can be assigned to a single LIL channel. It will then have certain data that will be accessible over
the LIL. Parameter 1 is the received data (RD) in the $80-$F80 format and will be re-transmitted by this station on
the assigned channel. This LIL CHAN parameter can also be set to 0. The controller will still receive global data
from the other station but the received data will not be re-transmitted and the other channel data (i.e. MINSCALE,
...) will not be accessible.. AIN_ function blocks convert a voltage input, having a
range defined during calibration, into a block output signal
that is scaled in engineering units. The output is then
interconnected to other function blocks within the
controller.
A 6-character ASCII value can be entered to identify the
engineering units of the output signal. The scaled output
range is configurable and has a factory default of 0.0 to
100.0 PRCT. Ranges such as 300.0 to 500.0, representing
engineering units in degrees C, can also be configured.
The Output Range is a special data type that includes the
MIN and MAX SCALE, the DPP, and the ENGUNITS
that can be connected to other blocks with a Range (RG
PTR) input.
Analog Input blocks are available on the MPU Controller
Board (CB) and on the I/O Expander Board (EB). Block names (IDs) are listed in Section 8.4 together with the case
rear terminal numbers. Power for 2-wire transmitters is available at the rear terminals.
A digital filter (time constant) is available to dampen process noise. A square root extractor is also available to
linearize a flow signal from a ?P transmitter, allowing the block output to be configured for flow units. Output QS
indicates the quality of the analog output signal O1, and will be high (1) when output O1 is bad, and low (0) when
good. Bad quality signifies an A/D conversion failure or a 1-5Vdc input signal that falls below 0.6 Vdc indicating
an open circuit or failure of a 2-wire transmitter.
