HONEYWELL TK-IOLI01模块,TK-IOLI01中文PDF用户手册
扩展端口引脚分配下表列出了在以下情况下需要的扩展端口引脚分配：建筑远程电缆。电缆之间的所有连接都是点对点的，即针脚2一端连接到另一端的针脚2，针脚3连接到针脚3等。I/O扩展总线终端当两个或多个基板在扩展系统中连接在一起时，输入/输出扩展总线必须正确端接。输入/输出总线必须在最后一个扩展系统中的基板。每个信号对端接120欧姆，1/4瓦在适当引脚之间接线的电阻器如下（另见上表）
HONEYWELL TK-IOLI01模块：针脚16-17；24 - 25; 20 - 21; 12 - 13; 8 - 9; 2 - 3输入/输出总线终端可以通过以下方式之一完成：通过在最后一个端口上安装目录号为IC693ACC307的输入/输出总线终端插头系统中的扩展基板（本地扩展基板或远程基板）。终端插头有一个物理安装在连接器内部的电阻器组。输入/输出总线终端插头随每个基板一起装运；只有最后一个基板在扩展链中，可以安装输入/输出总线终端插头。未使用的输入/输出总线终端插头可以丢弃或作为备件保存。如果扩展系统只有一个扩展基板，则输入/输出总线可以通过将50英尺（15米）输入/输出扩展电缆作为最后一根电缆安装而终止，目录号IC693CBL302或IC693CBL314。这些电缆具有终端电阻器安装在与扩展基板连接器连接的一端。您还可以构建一条自定义电缆，将终端电阻连接到适当的用于安装在总线末端的销。
Expansion Port Pin Assignments
The following table lists the expansion port pin assignments you will need when
building remote cables. All connections between cables are point-to point, that is, pin 2
of one end to pin 2 of the opposite end, pin 3 to pin 3, etc.I/O Expansion Bus Termination
When two or more baseplates are cabled together in an expansion system, the I/O
expansion bus must be properly terminated. The I/O bus must be terminated at the last
baseplate in an expansion system. Each signal pair is terminated with 120 ohm, 1/4 watt
resistors wired between the appropriate pins, as follows (see the above table, also):
pins 16 - 17; 24 - 25; 20 - 21; 12 - 13; 8 - 9; 2 - 3
The I/O bus termination can be done one of the following ways:
By installing an I/O Bus Terminator Plug, catalog number IC693ACC307, on the last
expansion baseplate (local expansion baseplate or remote baseplate) in the system.
The Terminator Plug has a resistor pack physically mounted inside of a connector.
The I/O Bus Terminator Plug is shipped with each baseplate; only the last baseplate
in the expansion chain can have the I/O Bus Terminator Plug installed. Unused I/O
Bus Terminator Plugs can be discarded or saved as spares.
If an expansion system has only one expansion baseplate, the I/O bus can be
terminated by installing as the last cable, the 50 foot (15 meter) I/O Expansion cable,
catalog number IC693CBL302 or IC693CBL314. These cables have the termination
resistors installed in the end that connects to the expansion baseplate connector.
You can also build a custom cable with termination resistors wired to the appropriate
pins for installation at the end of the bus.
