369B1860G0028培训教程,GE模块
RX7i的默认串行协议是Modbus RTU。默认电台地址是1。如果将控制器添加到多点网络，则必须小心控制器配置有唯一的站地址。具有的节点同一网络上的重复站点地址将无法正常工作。以下限制适用于PAC系统中的模拟扩展模块RX7i机架：▪ 基本模块必须位于不低于插槽4的插槽中。▪ 扩展器模块必须位于不高于插槽11的插槽中。
369B1860G0028培训教程▪ 扩展器模块不得位于低于基本模块的插槽中。由于这些限制，并且由于90-70模块在PACSystems RX7i机架最多可以有三个扩展器。（基础在插槽4中，插槽6、8和10中的扩展器或插槽5中的基座，插槽7中的扩展器，9和11。）请注意，这些限制不适用于模拟扩展90-70系列扩展机架中的模块。Genius总线控制器限制
以下限制适用于PACSystems RX7i中的GBC：
▪ 最小CPU扫描时间将由GBC完成的时间选通刷新其输出并收集其输入+500微秒。获得较小的扫描时间，使用SUSIO功能块或将GBC放置在具有非默认特征的扫描集。
▪ 如果%W参考地址用于COMMREQ状态或返回数据，则必须在范围%W00001-%W65536内。▪ 存储或清除包含连接到的两个GB的硬件配置同一个Genius网络可能会导致其中一个GBCs。这是由GBC异步清除其SBA引起的。这个用户可以安全地忽略设备故障的损失。DLAN/DLAN+（驱动本地网络）接口限制
固件版本为1.50或更高版本的PACSystems RX7i CPU支持DLAN接口，IC697BEM763模块，固件版本为3.00或更高版本。你必须确保您使用的是有效版本的DLAN固件，因为CPU无法检查DLAN的固件版本。（模块的固件版本可以可在EEPROM的标签上找到。）
如果您的RX7i应用程序需要访问DLAN的双端口内存，使用总线读写功能。访问DLAN模块时，设置将功能块上的区域参数设置为1。（对于DLAN模块，区域1预定义为模块的整个双端口内存。）DLAN仅在主RX7i机架中受支持。在中不支持扩展机架。
注意：DLAN接口模块是一个专用模块，可用性有限。如果您有DLAN系统，请参阅DLAN/DLAN+接口模块用户手册，GFK-0729了解详细信息。
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.
