369B1860G0028培訓教程,GE模塊
RX7i的默認串行協議是Modbus RTU。默認電臺地址是1。如果將控制器添加到多點網絡，則必須小心控制器配置有唯一的站地址。具有的節點同一網絡上的重復站點地址將無法正常工作。以下限制適用于PAC系統中的模擬擴展模塊RX7i機架：? 基本模塊必須位于不低于插槽4的插槽中。? 擴展器模塊必須位于不高于插槽11的插槽中。
369B1860G0028培訓教程? 擴展器模塊不得位于低于基本模塊的插槽中。由于這些限制，并且由于90-70模塊在PACSystems RX7i機架最多可以有三個擴展器。（基礎在插槽4中，插槽6、8和10中的擴展器或插槽5中的基座，插槽7中的擴展器，9和11。）請注意，這些限制不適用于模擬擴展90-70系列擴展機架中的模塊。Genius總線控制器限制
以下限制適用于PACSystems RX7i中的GBC：
? 最小CPU掃描時間將由GBC完成的時間選通刷新其輸出并收集其輸入+500微秒。獲得較小的掃描時間，使用SUSIO功能塊或將GBC放置在具有非默認特征的掃描集。
? 如果%W參考地址用于COMMREQ狀態或返回數據，則必須在范圍%W00001-%W65536內。? 存儲或清除包含連接到的兩個GB的硬件配置同一個Genius網絡可能會導致其中一個GBCs。這是由GBC異步清除其SBA引起的。這個用戶可以安全地忽略設備故障的損失。DLAN/DLAN+（驅動本地網絡）接口限制
固件版本為1.50或更高版本的PACSystems RX7i CPU支持DLAN接口，IC697BEM763模塊，固件版本為3.00或更高版本。你必須確保您使用的是有效版本的DLAN固件，因為CPU無法檢查DLAN的固件版本。（模塊的固件版本可以可在EEPROM的標簽上找到。）
如果您的RX7i應用程序需要訪問DLAN的雙端口內存，使用總線讀寫功能。訪問DLAN模塊時，設置將功能塊上的區域參數設置為1。（對于DLAN模塊，區域1預定義為模塊的整個雙端口內存。）DLAN僅在主RX7i機架中受支持。在中不支持擴展機架。
注意：DLAN接口模塊是一個專用模塊，可用性有限。如果您有DLAN系統，請參閱DLAN/DLAN+接口模塊用戶手冊，GFK-0729了解詳細信息。
The default serial protocol for the RX7i is Modbus RTU. The default Station
Address is 1. If the controller is added to a multi-drop network, care must be taken
that the controller is configured with a unique Station Address. Nodes with
duplicate Station Addresses on the same network will not work correctly.The following restrictions apply to Analog Expansion Modules in a PACSystems
RX7i rack:
? The base module must be in a slot no lower than Slot 4.
? The expander module must be in a slot no higher than Slot 11.
? No expander module may be in a slot lower than the base module.
Because of these restrictions, and because the 90-70 modules occupy two slots in
the PACSystems RX7i rack, a maximum of three expanders are possible. (Base
in Slot 4, Expanders in Slots 6, 8, and 10 or Base in Slot 5, Expanders in Slots 7,
9, and 11.) Please note that these restrictions do not apply to Analog Expansion
Modules in Series 90-70 Expansion Racks.
Genius Bus Controller
restrictions
The following restrictions apply to GBCs in PACSystems RX7i:
? The minimum CPU sweep time will be gated by the time it takes the GBC to
refresh its outputs and collect its inputs + 500 microseconds. To obtain a
smaller sweep time, use the SUSIO function block or place the GBCs in a
scan set that has non-default characteristics.
? If a %W reference address is used for COMMREQ status or return data, it
must be in the range %W00001 - %W65536.
? Storing or clearing a hardware configuration containing two GBCs attached to
the same Genius network may cause a Loss of Device fault for one of the
GBCs. This is caused by the GBCs clearing their SBAs asynchronously. The
user can safely ignore the Loss of Device fault.
DLAN/DLAN+ (Drives Local Area
Network) interface restrictions
PACSystems RX7i CPUs with firmware versions 1.50 or later support DLAN
Interface, IC697BEM763 modules with firmware versions 3.00 or later. You must
ensure that you are using a valid version of the DLAN firmware because the CPU
cannot check the DLAN’s firmware version. (The module’s firmware version can
be found on a label attached to the EEPROM.)
If your RX7i application program needs to access the DLAN’s dual port memory,
use the BUS READ and WRITE functions. When accessing a DLAN module, set
the Region parameter on the function block to 1. (For the DLAN module, region 1
is predefined to be the module's entire dual port memory.)
The DLAN is only supported in the main RX7i rack. It is not supported in
expansion racks.
Note: The DLAN Interface module is a specialty module with limited availability.
If you have a DLAN system, refer to the DLAN/DLAN+ Interface Module
User’s Manual, GFK-0729 for details.
