WOODWARD 9907-1200调速器,9907-1200使用流程
以太网PLC程序员简要报告通信中断。如果出现这种情况，以太网接口将用文字“LAN系统软件故障；恢复”和故障特定数据张贴两个或多个PLC故障从080008和/或080042开始。此外，文本“错误的远程应用程序请求；已丢弃”的故障可能会出现“请求”（1B0021）和“本地发送请求被拒绝；丢弃的请求”（110005）。当这些出现故障时，CPU374上的STAT LED关闭，以指示将故障记录到PLC故障表中。在某些情况下，在检测到通信丢失之前可能会发生10秒的延迟。正常操作以太网接口重新启动后恢复。
WOODWARD 9907-1200调速器STAT LED可以使用Station Manager OK重置命令当从以太网PLC编程器存储PLC配置时，会发生通信丢失商店成功完工后立即。尝试存储配置加逻辑和/或一次操作中的引用表可能会失败。然而，将配置与逻辑或参考分开存储表总是成功的。将程序或参考表存储到闪存可能会导致以太网通信丢失将PLC程序、配置和/或参考表从PLC RAM内存存储到闪存中时内存或EZ程序存储设备的以太网数据通信可能会丢失。正常数据在闪存或EZ程序存储设备存储操作期间，传输暂时暂停。在这些在这种情况下，当存储超过了允许完成的最长16秒时间。商店竣工后操作，将恢复正常操作。如果在存储到闪存或EZ程序存储期间发生超时设备，则应在正在使用的编程软件中增加超时值。查看用户的有关更多详细信息，请参阅编程软件手册。以太网闪存测试失败以太网子板不断测试其闪存的完整性。在极不可能的情况下如果检测到损坏的闪存，则会向PLC故障表，子板进入固件加载程序模式。但是，尝试重新加载当闪存设备发生硬故障时，固件总是会出现故障。无效的以太网重启事件通电后，Ethernet Station Manager异常日志中的重启事件（事件1H）可能会条目3中偶尔包含000cH，错误地指示以太网看门狗计时器超时发生。这种情况不会产生PLC故障或关闭Ethernet STAT LED，并且不会产生任何影响在后续操作中。当“电源”中建议使用电源时，不太可能发生这种情况使用本文件第2页的“兼容性和要求”。注意，实际的看门狗超时在PLC故障表中产生“子板复位”故障。
Ethernet PLC Programmer briefly reports a loss of communications. If this occurs, the Ethernet Interface will
post two or more PLC faults with the text “LAN system-software fault; resuming,” and fault-specific data
starting with 080008 and/or 080042. In addition, faults with text “Bad remote application request; discarded
request” (1B0021) and “Local request to send rejected; discarded request” (110005) may occur. When these
faults occur, the STAT LED on the CPU374 is turned off to indicate posting of faults to the PLC fault tables.
In some cases, a 10-second delay may occur before loss of communications is detected. Normal operation
resumes once the Ethernet Interface restarts. The STAT LED can be reset using the Station Manager OK
command.
When the PLC configuration is stored from an Ethernet PLC Programmer, the communications loss occurs
immediately after successful completion of the store. Attempts to store configuration plus logic and/or
reference tables in one operation can fail. However, storing configuration separately from logic or reference
tables always succeeds.
Store of Program or Reference Tables to Flash May Cause Loss of Ethernet Communications
While storing the PLC program, configuration, and/or reference tables from PLC RAM memory into Flash
memory or to the EZ Program Store device, Ethernet data communications may be lost. Normal data
transfers are temporarily suspended during a Flash or EZ Program Store device store operation. In these
cases, Ethernet data transfers (such as used by an Ethernet PLC Programmer connection) will fail when the
store exceeds the 16-second maximum period allowed for completion. Upon completion of the store
operation, normal operation will resume. If a timeout occurs during a store to Flash or EZ Program Store
device, the timeout value should be increased in the programming software being used. See the User’s
Manual for the programming software for more details.
Ethernet Flash Test Failure
The Ethernet daughter board continually tests the integrity of its flash memory. In the extremely unlikely
event that corrupted flash is detected, a “Module software corrupted; requesting reload” fault is posted to the
PLC Fault table, and the daughter board enters firmware loader mode. However, attempting to reload the
firmware always fails when a hard failure of a flash memory device has occurred.
Invalid Ethernet Restart Event
After power is applied, the restart event (event 1H) in the Ethernet Station Manager exception log may
occasionally contain 000cH in entry 3, erroneously indicating that a time-out of the Ethernet watchdog timer
occurred. This condition does not produce a PLC fault or turn off the Ethernet STAT LED, and it has no effect
on subsequent operation. It is unlikely to occur when a power supply recommended in “Power Supply
Compatibility and Requirements” on page 2 of this document is used. Note that an actual watchdog time-out
produces a “Reset of daughter board” fault in the PLC Fault table.
