Allen-Bradley ControlNet PLC-5, Руководство пользователя

Страница: 45 / 78

3XEOLFDWLRQ)HEUXDU\
Backup States B-3
‡ RQHRIWKHRSWLRQDOFRQILJXUDWLRQSDUDPHWHUVLQWKH&RQWURO1HW
%DFNXS&RQILJXUDWLRQDQG6WDWXV)LOHLVLQYDOLGWKHIROORZLQJ
RSWLRQDOSDUDPHWHUVDUHFKHFNHG
2SHUDWLRQDOPRGHLQYDOLGLIQRWHTXDOWRRU
(TXLYDOHQFHFKHFNVLQYDOLGLIJUHDWHUWKDQ[I
'HVLJQDWHGSULPDU\LQYDOLGLIQRWHTXDOWRRU
0D[LPXPSURJUDPVFDQWLPHLQYDOLGLIJUHDWHUWKDQ[
187DQGV\QFKURQRXVRSHUDWLRQDOPRGH
&URVVORDG)LOH&URVVORDG)LOH&URVVORDG)LOH/RZDQG
&URVVORDG)LOH+LJKLQYDOLGLIJUHDWHUWKDQRUHTXDOWR
While in the Invalid backup state, you can set default parameters for
the optional configuration parameters by intentionally entering an
incorrect configuration value for one of the first 3 words in the
ControlNet Backup Configuration and Status File. This will force all
parameters to be set to their default values.
)RUH[DPSOHE\VHWWLQJ
:RUGWREHHTXDOWRWKHIROORZLQJRSWLRQDOFRQILJXUDWLRQ
SDUDPHWHUVDUHGHIDXOWHG
• Operational Mode = Asynchronous Mode
• Equivalence Checks = All Disabled
• Designated Primary = Disabled
• Maximum Program Scan Time = 0
• Qualification Delay = 0
• Crossload File 1 = 0
• Crossload File 2 = 0
• Crossload File Low = 0
• Crossload File High = 0
No Control Backup State
When a valid backup configuration exists, but the PLC-5 processor is
not in Run mode, the PLC-5 ControlNet backup system is in the No
Control backup state. Both the Primary and Secondary LED's on the
1785-CHBM cartridge are off when in this state. While in the No
Control backup state, you can switch the PLC-5 processor to Run
mode; once in Run mode, however, the processor is no longer in this
state.
If there is a valid partner PLC-5 ControlNet backup system, and the
systems are connected on the ControlNet channel, the Qualified LED
is solid yellow. This indicates that the necessary configuration
needed to allow the backup pair to successfully communicate with
each other has been achieved.
You can make any configuration changes you wish to the ControlNet
Backup Configuration and Status file while the PLC-5 processor is in
the No Control backup state. Note that placing an invalid parameter
into the ControlNet Backup Configuration and Status file causes the
processor to switch to the Invalid backup state.