HONEYWELL TK-IOLI01模塊,TK-IOLI01中文PDF用戶(hù)手冊
擴展端口引腳分配下表列出了在以下情況下需要的擴展端口引腳分配：建筑遠程電纜。電纜之間的所有連接都是點(diǎn)對點(diǎn)的，即針腳2一端連接到另一端的針腳2，針腳3連接到針腳3等。I/O擴展總線(xiàn)終端當兩個(gè)或多個(gè)基板在擴展系統中連接在一起時(shí)，輸入/輸出擴展總線(xiàn)必須正確端接。輸入/輸出總線(xiàn)必須在最后一個(gè)擴展系統中的基板。每個(gè)信號對端接120歐姆，1/4瓦在適當引腳之間接線(xiàn)的電阻器如下（另見(jiàn)上表）
HONEYWELL TK-IOLI01模塊：針腳16-17；24 - 25; 20 - 21; 12 - 13; 8 - 9; 2 - 3輸入/輸出總線(xiàn)終端可以通過(guò)以下方式之一完成：通過(guò)在最后一個(gè)端口上安裝目錄號為IC693ACC307的輸入/輸出總線(xiàn)終端插頭系統中的擴展基板（本地擴展基板或遠程基板）。終端插頭有一個(gè)物理安裝在連接器內部的電阻器組。輸入/輸出總線(xiàn)終端插頭隨每個(gè)基板一起裝運；只有最后一個(gè)基板在擴展鏈中，可以安裝輸入/輸出總線(xiàn)終端插頭。未使用的輸入/輸出總線(xiàn)終端插頭可以丟棄或作為備件保存。如果擴展系統只有一個(gè)擴展基板，則輸入/輸出總線(xiàn)可以通過(guò)將50英尺（15米）輸入/輸出擴展電纜作為最后一根電纜安裝而終止，目錄號IC693CBL302或IC693CBL314。這些電纜具有終端電阻器安裝在與擴展基板連接器連接的一端。您還可以構建一條自定義電纜，將終端電阻連接到適當的用于安裝在總線(xiàn)末端的銷(xiāo)。
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.
