WOODWARD 9907-1200調速器,9907-1200使用流程
以太網PLC程序員簡要報告通信中斷。如果出現這種情況，以太網接口將用文字“LAN系統軟件故障；恢復”和故障特定數據張貼兩個或多個PLC故障從080008和/或080042開始。此外，文本“錯誤的遠程應用程序請求；已丟棄”的故障可能會出現“請求”（1B0021）和“本地發送請求被拒絕；丟棄的請求”（110005）。當這些出現故障時，CPU374上的STAT LED關閉，以指示將故障記錄到PLC故障表中。在某些情況下，在檢測到通信丟失之前可能會發生10秒的延遲。正常操作以太網接口重新啟動后恢復。
WOODWARD 9907-1200調速器STAT LED可以使用Station Manager OK重置命令當從以太網PLC編程器存儲PLC配置時，會發生通信丟失商店成功完工后立即。嘗試存儲配置加邏輯和/或一次操作中的引用表可能會失敗。然而，將配置與邏輯或參考分開存儲表總是成功的。將程序或參考表存儲到閃存可能會導致以太網通信丟失將PLC程序、配置和/或參考表從PLC RAM內存存儲到閃存中時內存或EZ程序存儲設備的以太網數據通信可能會丟失。正常數據在閃存或EZ程序存儲設備存儲操作期間，傳輸暫時暫停。在這些在這種情況下，當存儲超過了允許完成的最長16秒時間。商店竣工后操作，將恢復正常操作。如果在存儲到閃存或EZ程序存儲期間發生超時設備，則應在正在使用的編程軟件中增加超時值。查看用戶的有關更多詳細信息，請參閱編程軟件手冊。以太網閃存測試失敗以太網子板不斷測試其閃存的完整性。在極不可能的情況下如果檢測到損壞的閃存，則會向PLC故障表，子板進入固件加載程序模式。但是，嘗試重新加載當閃存設備發生硬故障時，固件總是會出現故障。無效的以太網重啟事件通電后，Ethernet Station Manager異常日志中的重啟事件（事件1H）可能會條目3中偶爾包含000cH，錯誤地指示以太網看門狗計時器超時發生。這種情況不會產生PLC故障或關閉Ethernet STAT LED，并且不會產生任何影響在后續操作中。當“電源”中建議使用電源時，不太可能發生這種情況使用本文件第2頁的“兼容性和要求”。注意，實際的看門狗超時在PLC故障表中產生“子板復位”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.
