集散控制系统PPD517 3BHE041576R3011的组成
当可选的LIL已安装通信板。他们允许控制器从其他站点获取全局数据丽尔。所有区块编号按以下顺序分配：每一次使用都是全站性的。在LIL中接收数据标准范围为$80到$F80的格式。块输出为实数，以工程单位进行缩放使用最小和最大比例参数。输出范围是一种特殊的数据类型，包括最小值和最大刻度、DPP和ENG单位连接到具有范围（RG PTR）的其他块输入输出QS指示接收数据的量，以及当数据不好时，将变高（1）。这通常是与由于LIL而无法接收全局数据相关源的故障或错误配置。
可以将AIL功能分配给单个LIL信道。然后，它将具有可通过访问的特定数据LIL。参数1是$80-$F80格式的接收数据（RD），该站将在分配的频道。此LIL CHAN参数也可以设置为0。控制器仍将接收全局数据
但是所接收的数据将不被重新发送，并且其它信道数据（即，…）将不可访问。AIN_功能块转换电压输入，具有校准期间定义的范围，转换为块输出信号
以工程单位进行缩放。输出为：与内部的其他功能块互连控制器。
可以输入6个字符的ASCII值来标识输出信号的工程单位。缩放输出范围是可配置的，出厂默认值为0.0到100.0 PRCT。范围，例如300.0到500.0，表示也可以配置以摄氏度为单位的工程单位。
输出范围是一种特殊的数据类型，包括最小和最大刻度、DPP和ENG单位可以连接到具有范围（RG）的其他块PTR）输入。
MPU控制器上有模拟输入块
板（CB）和I/O扩展板（EB）上。区块名称（ID）与案例一起在第8.4节中列出后端子号。双线发射器的电源可在后端子上使用。
数字滤波器（时间常数）可用于抑制过程噪声。平方根提取器也可用于：
线性化来自∆P变送器，允许为流量单元配置块输出。输出QS
指示模拟输出信号O1的质量，当输出O1不好时为高（1），当输出O2不好时，为低（0）
好的质量差表示A/D转换失败或1-5Vdc输入信号低于0.6VDC，表示：双线发射器的开路或故障。
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.
