Allen-Bradley ControlNet PLC-5 User Manual page 39

Monitoring and Troubleshooting Your ControlNet PLC-5 Backup System
Word Definition
50 Qualification Crossload Time. The time (in ms) it takes to crossload the entire
data table from the primary processor to the secondary processor. This value is
overwritten each time the processor goes through qualification.
51 On-Demand Crossload Time. The time (in ms) it takes to crossload the data
table state information from the primary to the secondary. This value is
overwritten each time the processor goes through qualification, and when you
initiate an On-Demand Data Table Crossload command.
52 Crossload Active. This word equals 1 when a crossload is active; it is equal to 0
when a crossload is not active. This word applies to both Qualification and
On-Demand crossloads.
53 Crossload Status. This is a Message instruction error code. The processor
writes the value into this word. For information on error descriptions, refer to
your PLC-5 Instruction Set Reference Manual.
54 Crossload Failed File. This word displays the file number on which the
crossload failed. The crossload status word located in word 53 displays the
error code and word 54 displays its correlated file.
55 User-Defined Crossload File 1. You can select a single file number, written in
this word, to be crossloaded during the Qualification crossload, and on-demand
when setting the appropriate bit in word 33.
56 User-Defined Crossload File 2. You can select a single file number, written in
this word, to be crossloaded during the Qualification crossload, and on-demand
when setting the appropriate bit in word 33.
57 User-Defined Crossload Range Low File. You can select a range of files to be
crossloaded during the Qualification crossload, and on demand when setting
the appropriate bit in word 33. The lower file number of the range of files to be
crossloaded must be written into this register.
58 User-Defined Crossload Range High File. You can select a range of files to be
crossloaded during the Qualification crossload, and on demand when setting
the appropriate bit in word 33. The higher file number of the range of files to be
crossloaded must be written into this register.
59-64 The secondary time/date stamp of when the processor last took over as
secondary processor. The format of the date is the same as the system clock in
the status file.
65-68 These words are functionally the same as words 55 through 58. The difference
is that these words display the current PLC-5 processor state of these
configuration parameters. When in Run mode, the processor continuously
updates words 65 through 68. In other words, new configuration parameters
are written into words 55 through 58, while the PLC-5 processor writes its
internal state of these configuration parameters into words 65 through 68.
When you accept a configuration, the configuration parameters in words 55
through 58 are copied into words 65 through 68.
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