4-2. LC Programming Approach
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U3-1021
Westinghouse Proprietary Class 2C
4-2.1. Application Programming for the LC Module
When using the LC, the entire array of dual port LC RAM is available to the OIOB.
Special Controller algorithms reference this memory as holding registers or buffers.
When planning and implementing an LC application, the following reference
documents should be available:
•
For detailed descriptions of the Ovation SLC algorithms, see “Ovation
Algorithms Reference Manual” (R3-1100).
•
For information on Ovation point record types and fields, see “Ovation Record
Types Reference Manual” (R3-1140).
•
For general information on Controller application programming, including
procedures to add text algorithms to an application, see “Ovation Control
Builder User’s Guide” (U3-1040).
Figure 4-2 illustrates the interface between the OIOB and the LC dual port static
RAM.
Figure 4-2. LC Ovation IO Bus Interface
LC algorithm
specifies dual port
RAM location
reference
Second OIOB
address holds data
RAM location
Data
OIOB Addresses
•
•
•
LC Dual Port RAM
0
1
2
4093
4094
4095
(0 to 4095)
Register No.
