TRICONEX 9662-1端子模块,中文说明
PACSystems CPU返回90-70系列CPX935的主要/次要类型（主要类型12，次要类型35）连接到PCM暂存板存储器与PCM通信。
▪ 如果您的RX7i应用程序需要访问PCM的双端口内存，使用总线读写功能。当访问PCM，将功能块上的区域参数设置为1。（对于PCM，区域1预定义为模块的整个双端口内存。）
注：有关IC697PCM711操作的详细信息，请参阅可编程协处理器模块和支持软件用户手册，GFK-0255。恒定扫描恒定扫描时间（使用时）应设置为至少大于10毫秒
TRICONEX 9662-1端子模块比正常扫描时间长，以避免监测时出现任何过度扫描情况或者与程序员一起执行在线更改。窗口完成故障如果恒定扫描设置不够高，则会发生。一致的结束扫描条件可能导致程序员与PLC失去通信。PCM的默认背板通信超时值为5秒。PCM向CPU发送请求后，PCM在等待CPU的响应。在大多数情况下，CPU会做出响应在5秒超时内；然而，在某些情况下，CPU可以响应时间超过5秒。这些情况仅限于装载或存储程序和/或配置-尤其是当程序中的块大于8 KB。包含EXE块（同样是*.EXE文件>8 KB）的文件夹是最有可能引起问题。确保PCM不遵守背板超时，必须将文件加载（使用termf）到PCM。文件必须是一个名为CPU的二进制文件。环境。该文件的内容如下（所有值以十六进制表示）：
一旦二进制文件CPU。ENV（如下）已创建，请使用termf加载CPU。环境至PCM。然后执行PCM的软复位。执行软重置后PCM的背板通信超时应为10秒。
注：上述CPU的副本。注意安全CPU。在上执行硬重置时，不会使用ENV文件PCM。使用CPU。ENV文件驻留在PCM中，必须进行软重置每次PCM硬复位后执行。请注意，可以从梯形图应用程序发出软复位COMMREQ；因此，可以修改应用程序以处理所需的
系统通电循环后的PCM。
PACSystems CPUs return the major/minor type of the Series 90-70 CPX935
(major type 12, minor type 35) to the PCM scratch pad memory when
communicating with a PCM.
▪ If your RX7i application program needs to access the PCM’s dual port
memory, use the BUS READ and WRITE functions. When accessing the
PCM, set the Region parameter on the function block to 1. (For the PCM,
region 1 is predefined to be the module's entire dual port memory.)
Note: For details on operation of the IC697PCM711, refer to the Programmable
Coprocessor Module and Support Software User’s Manual, GFK-0255.
Constant sweep Constant Sweep time, when used, should be set at least 10 milliseconds greater
than the normal sweep time to avoid any over-sweep conditions when monitoring
or performing on-line changes with the programmer. Window completion faults
will occur if the constant sweep setting is not high enough. A consistent over
sweep condition can cause the programmer to lose communications with the PLC. The PCM has a default backplane communications timeout value of 5 seconds.
After the PCM has sent a request to the CPU, the PCM applies this timeout while
waiting on a response back from the CPU. In most cases, the CPU will respond
well within the 5–second timeout; however, in certain instances the CPU can take
longer than 5 seconds to respond. These cases are limited to LOADs or STOREs
of program and/or configuration -especially if blocks in the program are larger than
8 KBytes. Folders containing EXE blocks (again with *.EXE files >8 KBytes) are
most likely to cause problems. To ensure that the PCMs do not observe
backplane timeouts, a file must be loaded (using termf) to the PCM. The file must
be a binary file named CPU.ENV. The contents of this file are as below (all values
are specified in hexadecimal):
Once the binary file CPU.ENV (below) is created, use termf to load CPU.ENV to
the PCM. Then execute a soft reset of the PCM. After executing the soft reset, the
PCM’s backplane communications timeout should be 10 seconds.
Note: A copy of the above CPU.ENV file can be obtained from
http://www.ge-ip.com/support.
CAUTION
The CPU.ENV file will not be used when a hard reset is performed on the
PCM. With the CPU.ENV file resident in the PCM, a soft reset must be
performed after every hard reset of the PCM. Be aware that it is possible to
issue a soft reset COMMREQ from the Ladder Diagram application;
therefore, the application can be modified to handle the required reset of
PCMs after a power cycle of the system.
