RELIANCE 57C493自动化模块
AOUT_功能块转换功能块互连信号，连接到输入S，连接到a具有范围为4-20 mAdc的块输出。输入D可用于断开输出与断言为高（1）时的负载。此功能非常有用当两个或多个控制器连接到公共负载。当一个控制器连接到使用断开功能。功能块包括：通过块缩放至4-20 mA输出范围输入信号。范围指针参数（输入R）告诉块从何处获取缩放信息。
如果未配置此参数，则块将：使用0.00到100.00的范围。上有两个模拟输出功能块：
控制器板和扩展器板。功能块名称和终端标识如下所示。输出是工厂的校准为4-20 mAdc，不需要现场校准。但是，如果出现以下情况，可以进行现场校准渴望的通过调整脉冲发生器校准输出，直到获得所需输出（即，0为4.0 mA）然后按下存储按钮。校准期间，验证模式可用，将在中显示mA值数字显示，脉冲发生器在整个范围内调整输出。
输出QS是质量状态输出
如果输出驱动器检测到高阻抗或开路，它将变高环行字母数字将闪烁AOUT_。当检测到开路情况时为OC。QS输出可以也可用于在冗余应用中切换到第二输出电路。固件1.30及更高版本中的ATD_块可用作在循环中需要（每个循环最多5个），以趋势连接到输入A的模拟变量。块可以存储最多170个数据点，具体取决于启用/禁用功能（见下文）。趋势可能是使用Modbus命令显示。可以检索数据并由远程操作员站显示，并显示来自该站的数据分组。个人电脑或运行i|ware PC操作员界面软件的I124Station可以在回路详细信息屏幕或模拟详细信息上显示趋势数据屏幕参数TRND TYP允许将数据存储在两种格式：每个采样时间的平均值或每个采样时间内数据的峰值/峰值。全部的基于RG PTR（范围指针）输入。范围信息将：在通过网络检索时成为数据包的一部分通信。未配置此输入时，范围将使用0.0-100.0。
AOUT_ function blocks convert function block
interconnection signals, connected to input S, to a
block output having a range of 4-20 mAdc. Input
D can be used to disconnect the output from the
load when asserted high (1). This feature is useful
when two or more controllers are connected to a
common load. When one controller is connected to
the load, others are disconnected using the
disconnect feature. The function block includes
scaling to range the 4-20 mA output with the block
input signal. The range pointer parameter (input R)
tells the block where to obtain scaling information.
If this parameter is not configured the block will
use a range of 0.00 to 100.00.
Two analog output function blocks are available on
the Controller Board and one additional on the
Expander Board. Function block names and terminal identifications are listed below. The output is factory
calibrated for 4-20 mAdc and should not require field calibration. However, field calibration can be performed if
desired. The output is calibrated by adjusting the pulser until the desired output (i.e. 4.0 mA for zero) is obtained
and then pressing the store button. A verify mode is available during calibration that will show the mA value in the
numeric display as the pulser adjusts the output over the full range.
Output QS is the Quality Status output. It will go high if the output driver detects a high impedance or an open
circuit. The alphanumeric will flash AOUT_.OC when an open circuit condition is detected. The QS output could
also be used to switch to a second output circuit in a redundancy application. ATD_ blocks, in firmware 1.30 and higher, can be used as
needed in loops (up to a maximum of 5 per loop) to trend an
analog variable connected to input A. The block can store
up to 170 data points depending upon the use of the
enable/disable function (see below). A trend can be
displayed using Modbus commands. Data can be retrieved
and displayed by a remote operator station that can retrieve,
interpret, and display data packets from the station. A PC or
i|station running i|ware PC operator interface software can
display trend data on a Loop Detail screen or Analog Detail
screen.
Parameter TRND TYP allows data to be stored in one of
two formats: the average over each sample time or the
peak/peak values of the data over each sample time. All
data is stored in a normalized form based on the value of the
RG PTR (range pointer) input. The range information will
be part of the data packet when retrieved over the network
communications. When this input is unconfigured, a range
of 0.0 - 100.0 will be used.
