Allen-Bradley ControlNet PLC-5 User Manual page 38

4-8 Monitoring and Troubleshooting Your ControlNet PLC-5 Backup System
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Word
33
34-39
40-45
46
47
48
49
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Definition
Perform On-Demand Crossload. You can specify whether to crossload timers,
counters, PID files, or user-defined files (configured in words 55, 56, 57, and 58
of the ControlNet Backup Configuration and Status file) by setting appropriate
bits in this word. After the PLC-5 has read the word, it clears it. This feature
works for both primary and secondary processors.
• Bit 0 - Crossload Timers
• Bit 1 - Crossload Counters
• Bit 2 - Crossload PID
• Bit 3 - Crossload user-defined files
reserved
The timedate stamp indicating when the processor last took over as the primary
is stored here. The format of the data is the same as the clock in the status file.
Qualification status. The reason code for why the processor failed qualification
or if the configuration parameters were changed by the primary. Valid values
include:
• 0 - Passed qualification
• 1 - Equivalence check - Ladder programs different
• 2 - Equivalence check - Data table structures different
• 3 - Equivalence check - I/O map tables different
• 4 - Equivalence check - ControlNet Backup Configuration and Status files
different
• 5 - Equivalence check - Force tables different
• 6 - Equivalence check - Status files different
• 7 - Qualification passed, but configuration parameters changed by primary
• 8 - Qualification failed due to processor being faulted
• 9 - Qualification failed due to keyswitch change to Program mode
• 10 - Qualification failed due to Run mode inhibited
• 11 - Qualification failed due to processor uploading or downloading program
• 12 - Qualification failed due to ContronNet reconfiguration in progress
• 13 - Qualification failed due to invalid backup state
• 14 - Qualification failed due to partner no longer being a primary
• 15 - Qualification failed due to invalid backup configuration parameters
• 16 - unused
• 17 - Qualification crossload failed
• 18 - Qualification failed due to unavailable edit resource
Lost Partner Counter. A counter which increments every time you lose
communication with the partner processor.
Maximum Program Scan Exceed Counter. A counter which increments every
time the maximum program scan time is exceeded. This counter is reset for
the processor on transition into Run mode.
Equivalence Check Error. A bit is set for each area in which an equivalence
mismatch is detected. There is a background check of the ladder program,
force tables, and status files for differences.
• Bit 0 - Set if the ladder programs between the two systems are different
• Bit 1 - Set if the data table structures between the two systems are
different. Note the data table structure is not the same as the values in the
data table files.
• Bit 2 - Set if the I/O map tables between the two systems are different
• Bit 3 - Set if the Backup Configuration and Status files between the two
systems are different
• Bit 4 - Set if the Force tables between the two systems are different
• Bit 5 - Set if the Status files between the two systems are different