350015 133292-01BENTLY
350015 133292-01BENTLY
350015 133292-01BENTLY
GE Fanuc PACSystems 热备份冗余CPU用户指南（中文）是PAC 系统RX7i 的热备冗余CPU 的硬件，配置，编程和操作参考。
冗余CPU 使用于重要环境和在系统单个元件发生错误时继续操作。冗余系统使用俩个CPU，其中一个激活的单元控制进程，备份单元与激活单元同步并且在必要时接过程序控制权。当俩个单元处于运行状态时俩个单元同步，备份单元通过一个冗余通讯模块从激活单元接收到最新的状态和同步信息，并且俩个单元都同步的运行各自的逻辑程序。
每个单元必须有一个冗余CPU（IC698CRE020）和一个或俩个冗余通讯模块（IC698RMX016）。冗余通讯通过一对或俩对RMX 单元来提供通讯路径。
当检测到激活单元的故障时，控制自动切换到备用单元。可以通过激活RMX 模块上的转换开关开始控制转换或者通过应用程序激活一个切换服务请求。当用户定义的控制切换发生了，CPU 转换角色，激活单元变成备份单元，备份单元变成激活单元。
系统通过控制数据的交换来保持同步，其中的数据包括已定义机器的状态和保持CPU 同步操作必须的所有内部数据。每个扫描周期从激活单元到备份单元同步俩次数据。CPU 到CPU 的传输经过数据完整性校验。
area: Class 1 div 2
The PS supports the following types of fieldbus standards:
Profibus DP，up to 12 MBd
Modbus RTU，1200 to 38. 4KBd
Industrial” CAN I/0 Bus
o
Open CAN -Bus，up to 1 MBd
o
Foundation Fieldbus H1
up to 31. 25KBd
Foundation Fieldbus H2 (fast Ethernet)
HART
The system allows different types of field buses to be mixed and run simultaneously in the same field controller PS.
Industrial “field control explosion (AC800F) consists of the following components:
Basic unit pm802f
Power supply sa801f/sd802f
o
Ethernet network card ei801f/ei802f/ei803f
o
Fieldbus interface card fi810f/fi820f/fi830f
Various accessories
The main components of the field controller PS are described below.
Basic unit pm802f
The basic unit pm802f is composed of a metal rack and a CPU motherboard. It periodically scans the data from the
The signals of the field bus sensors are processed according to the control application program configured by the user, and then the calculation results are passed
The fieldbus interface card returns the corresponding fieldbus actuator.
Two field controllers can realize controller 1:1 redundancy, and undisturbed switching between master and slave PS. Two on each PS
Ethernet network card, the second network card is used to connect the system network diginets), and the second network cards can be interconnected with each other to form a special
Redundant communication link (diginetr) to ensure information synchronization between master and slave PS. — However, the master PS fails, and the slave PS can quickly and
