Counters - GE PACSystems RX7i Cpu Programmer's Reference Manual

5.7 Counters

Function
GFK-2950C
Description
Down Counter. Counts down from a preset value. The output is ON whenever the
Current Value is  0.
The parameter that appears above the function block is a one-dimensional, three-
word array in %R, %W, %P, %L, or symbolic memory that the counter uses to store
its current value, preset value and control word.
For details, refer to Counters in Chapter 4.
Up Counter. Counts up to a designated value. The output is ON whenever the
Current Value is  the Preset Value.
The parameter that appears above the function block is a one-dimensional, three-
word array in %R, %W, %P, %L, or symbolic memory that the counter uses to store
its current value, preset value and control word.
For details, refer to Counters in Chapter 4.
February 2018
Chapter 5. Function Block Diagram (FBD)
249