• 统一的 40 针前连接器，适用于 SIMATIC S7-1500 I/O 模块
• 适用于宽度为 25 mm 或 35 mm 的模块
• 带螺钉型端子或推入式端子
• 可连接芯线截面积0.25 mm² 至 1.5 mm²（AWG 24 至 16）
• 用于 35 mm 模块的前连接器需单独订购；
  模块供货范围内包括 25 mm 模块的前连接器

• 40 个端子，分为两排排列，从 1 到 40 顺序编号
• 端子直接分配给 LED 和标签，简化了接线、调试和故障排除
• 具有用于四个电压桥接件的支架，可方便而灵活地形成电压组；
  四个单元提供有前连接器（可作为备件提供，每包 20 个）
• 集成式屏蔽设计，适用于模拟量模块和工艺模块；
  安装节省空间，无需使用工具，可确保很高的坚固性和 EMC 稳定性；
  随模拟量模块提供的部件
• 用于对电缆束进行机械固定并消除电缆接头应力的电缆扣；
  随前连接器提供 1 件

With two cabling systems, SIMATIC TOP connect ensures efficient wiring of the input and output module of the SIMATIC S7-1500: Fully modular connection for fast and clearly arranged connecting to sensors and actuators in the field, and flexible connection for simple wiring inside the control cabinet.

With the TIA Selection Tool, you can select suitable system cabling for the individual I/O modules with a simple mouse click. Suitable components for the respective I/O module are always offered. These can be transferred to the order list and then ordered in the Industry Mall.

Further information can be found on the Internet at

http://www.siemens.com/tia-selection-tool

Two cabling variants are available for a wide range of control cabinet concepts:

Fully modular connection

The system consists of:

• Front connector module
• Connecting cable
• Terminal modules in the following versions: Basic module, signal module and function module

Connection errors are thus practically excluded and installation overhead is significantly reduced. Systematic connection of the SIMATIC system. The assembly overhead for the connecting cables is drastically reduced thanks to the use of pre-assembled or easily assembled cables sold by the meter.

SIMATIC TOP connect for S7-1500/ ET200 MP, fully modular connection

Flexible connection

Flexible connection with front connectors is available with 20 (Pin1 – 20) or 40 wired single cores.

These are available in lengths from 2.5 m to 10.0 m.

The single cores are available in different versions:

• Wire type H05V-K is used for industrial applications
• The UL/CSA-approved core is available for export to North America
• The halogen-free version is used where low smoke gas density in the event of fire is required, e.g. in building automation

The blue wires are numbered sequentially and can be routed direct to each element in the control cabinet. The numbering of the single cores corresponds to the coding of the front connector contacts.

In comparison to conventional single wiring, there is a cost saving of 50% for assembly, since the single cores that have already been checked on the connector are fixed.

Thus no complex pre-assembly of up to two times 20 single cores per module is necessary.

在单模或多模光纤端面上蒸镀一层钯膜，钯膜厚度为10—50nm。注入光纤的光在输出端面上产生反射，当把传感器暴露于氢气中时，钯与氢反应引起钯膜折射率的变化，从而使光强度发生变化。折射率变化的大小与氢浓度有关，通过检测光强度变化可以确定氢的浓度 。