Rockwell Automation 1785-CHBM ControlNet PLC-5 Hot Backup System User Manual - Manual (Page 50)

Publication 1785-UM024B-EN-P - January 2003
3-24 Installing and Configuring Your ControlNet PLC-5 Backup System
Invalid State Reason
If the system is in an Invalid backup state (refer to Appendix B for
more information on backup states), a description of the problem is
displayed. Refer to chapter 5 for information on corrective actions you
can take.
Maximum Pscan Information
This information is applicable for Synchronous mode operation only.
The following parameters are listed in this section:
• Configured Scan - the Maximum Program Scan Time
• Adjusted Scan - the Maximum Program Scan Time rounded up
to the next integer multiple of the NUT
• NUT Time (ms) - the parameter configured in RSNetWorx
• Number of NUTs - the number of NUTs in the Adjusted
Maximum Program Scan Time
Crossloading Over Data Highway Plus
You can crossload Data Table files over Data Highway Plus via
channel 1A. This ability allows crossloading without affecting the
ControlNet channel. This may be desirable when the unscheduled
bandwidth of the ControlNet channel is so busy that any additional
traffic may cause network problems.
To use this feature, you must set up channel 1A:
1. Wire the channel by installing a point-to-point blue wire on
Channel 1A of both of the processors
2. Set the Channel 1 A DIP switches located on the side of each
processor:
Side view of PLC-5/40C and -5/80C processors Switch Assembly SW1
1 2 3 4 5 6 7
Side View
switch pushed up
switch pushed down