GE 8601-FT-NI
冗余内存交换单元硬件故障
奇偶故障或者VME总线故障被认为是RMX模块的硬件故障。发生此类故障时会执行下列操作:
失去选项模块或者冗余连接硬件故障会被被记录到PLC故障列表中。
俩个单元都记录冗余连接通讯故障
所有RMX模块的指灯关断
置位关联的模块故障位置参数(例如SLOT__00XX故障接点被置位,其中XX是RMX模块中的槽号。
通讯冗余连接不再使用。如果其它连接仍然在使用,那条连接会用来作其它的数据传输,单元仍然处于同步状态。如果其它冗余连接都不可用并且每个单元都在run模式下,那个单元当做非同步的激活单元使用。电源必须被重新上电来使故障的RMX模块重新投入使用。
冗余连接通讯失败
下面的错误会被报告为冗余连接失败:
另一个单元掉电或者发生错误导致通讯失败。
1俩个RMX模块之间的其中一条或者俩条电缆都发生错误或者断线。
连接俩个RMX模块的光纤发生错误导致网络错误。(这包括数据校验不匹配,协议错误和错误的数据包)。
另一个CPU为在失败等待时间内达到下一一个同步点。
发生冗余连接通讯故障时会执行下面的动作:
1.冗余连接通讯失败或者失败等待超时故障会被记录在俩个单元中的PLC故障列表中。
2.俩个RMX模块的连接正常指示灯熄灭。
3.置位关联的模块故障位置参数(例如SLOT_ _00XX故障接点被置位,其中XX是RMX模块中的槽号。)
4.通讯冗余连接不再使用。如果另-条连接还在运行,那条连接会用来作其它的数据传输,单元仍然处于同步状态。如果其它冗余连接都不可用并且每个单元都在run模式下,那个单元当做非同步的激活单元使用。
如果RMX模块的OK指示灯还处于ON状态,连接可以通过重新上电一次或者使用硬件配置来保存。如果其中有OK指示灯变成OFF,必须重新上电来保存配置到RMX模块。
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