Filter
Top Products
840 USE 106 00 January 2003 31
2
Theory of 984 Ladder Logic HSBY
Operation
At a Glance
Purpose This chapter covers the 984 Hot Standby and its theory of operation.
What’s in this
Chapter?
This chapter contains the following topics:
Topic Page
How a 984 HSBY System Works 32
System Scan Time 33
The State RAM Transfer and Scan Time 36
Default Transfer Area 38
Customizing Options 40
Custom Scans 41