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FOXBORO 0303440C+0303443B气动控制器
由热电偶在然后根据热电偶类型。为了获得绝对值温度，参考结的温度为补充。输出+32767的溢出数。如果输入电压下溢测量范围，下溢数值输出–32767的。在这两种情况下，错误消息都是通过CS31系统总线发送。温度低于0°C被评估为“欠流”。如果出现断线（开路），编号为-32767是输出。此外，通过CS31系统总线。所有未使用的通道必须短路。注：由于L型热电偶（铁/康铜，Fe–CuNi根据DIN 43710）类似于J型热电偶，也可用于温度范围为0…900°C。稍大的热Emf然而，由L型热电偶产生，假装温度有点高。下表说明了这一事实（所有温度数据均指参考温度0°C）：温度-如果使用L型热电偶，则通过测量模块评估温度保证点代替J型热电偶配置“未使用通道”如果通道成对未使用，则忽略它们很有用测量值的获取以及在软件中进行处理。其他渠道包括处理速度更快。图5.2.5-3显示了如何设置配置“无通道评估”。测量值与16位字中位的排列根据模拟表示a和b模拟通道的测量范围为成对配置（即总是同时用于2个通道），见图5.2.5–3。如果发生溢流或下溢，或如果检测到断路，则数字+32767或–32767为输出。
以下三幅图说明了评估模块的功能
寻址必须在每个模块上设置地址，以便中央单元可以正确访问输入和输出。关于项目的详细描述“寻址”包含在章节中中央单元和耦合器的“寻址”。对于设置模拟格式（表示a和b），请参见图5.2.5-3。设置地址的开关在盖子下面模块外壳右侧（见图5.2.5–3）。如果中央单元07 KR 31、07 KT 31、07 KR 91、07 KT92和07 KT 93用作总线主控，如下地址分配有效：正常操作模块在通电后初始化初始化所有指示灯都亮起。如果CS31系统总线不运行，LED 3闪烁。如果发生错误，错误指示灯也会亮起初始化期间。诊断和显示模块ICDT 08 B5提供以下诊断功能：开路（断线）检测，如果Pt100/Pt1000温度传感器或使用热电偶存储并保存此信息询问（错误类型和错误位置）模块内部错误检测检测传输错误检其中一个错误，红色错误LED亮起向上的然后将错误消息发送中央单元或连接到连接器。
The thermoelectric voltage generated by the
thermocouples is converted into binary values inside the
module and then linearized according to the
thermocouple type. In order to get the absolute
temperature, the temperature of the reference junction is
added.overflow number of +32767 is output. If the input voltage
underflows the measuring range, the underflow number
of –32767 is output. In both cases, an error message is
sent via the CS31 system bus. Temperatures lower than
0°C are evaluated as ”Underflow”.
If a broken wire (open circuit) occurs, the number –32767
is output. In addition, an error message is sent via the
CS31 system bus.
All unused channels must be short–circuited.
Note:
Since L type thermocouples (Iron/constantan, Fe–CuNi
according to DIN 43710) are similar to J type
thermocouples, they also can be used in the temperature
range of 0...900 °C. The slightly greater thermal Emf
generated by the L type thermocouple, however,
pretends a little higher temperature. The following table
illustrates this fact (all temperature data is referred to a
reference temperature of 0 °C):
Temperature Temperature evaluated by the moduat the mea- le, if an L type thermocouple is used
suring point instead of a J type thermocouple Configuration ”Unused channel”
If channels are unused in pairs, it is useful to omit them
from the acquisition of the measured value and
processing in the software. The other channels are
processed faster then. Figure 5.2.5–3 shows how to set
the configuration ”No evaluation of channels”.
Relationship between the measuring values and the
arrangement of the bits in the 16–bit word
according to the analog representations a and b
The measuring ranges for the analog channels are
configured in pairs (i.e. always for 2 channels together),
see Fig. 5.2.5–3. If an overflow or an underflow occurs, or
if an open circuit is detected, the numbers +32767 or
–32767 are output.
The following three figures illustrate the evaluation
functions of the module.Addressing
An address has to be set on each module, so that the
central unit can access the inputs and outputs correctly.
A detailed description concerning the item
”Addressing” is contained in the chapters
”Addressing” of the central units and couplers. For
setting the analog format (representation a and b) see
Fig. 5.2.5–3.
The switches for setting the address are under the cover
on the right side of the module housing (see Fig. 5.2.5–3).
If the central units 07 KR 31, 07 KT 31, 07 KR 91, 07 KT
92 and 07 KT 93 are used as bus masters, the following
address allocations are valid:
Normal operation
The module initializes itself after power ON. During
initialization all LEDs are ON.
If the CS31 system bus does not run, the LED 3
flashes. The error LED also light up, if an error occurs
during initialization.
Diagnosis and displays
The module ICDT 08 B5 offers the following diagnosis
functions:
Detection of open circuit (broken wire), if
Pt100/Pt1000 temperature sensors or
thermocouples are used
Storing and holding ready this information for
interrogation (error type and error location)
Detection of an error inside the module
Detection of a transmission error
If one of these errors is detected, the red error LED lights
up. The error message is then sent to the central unitor to the coupler.
