Rockwell Automation 1769-HSC Compact High Speed Counter Module - Manual (Page 39)

Rockwell Automation Publication 1769-UM006E-EN-P - July 2013 39
Module Operation Chapter 2
Rate Range
In a non-inverted rate range, the outputs are active if the rate measurement is
within the user-defined range. In an inverted rate range, the outputs are active if
the rate measurement is outside the user-defined range. The input rate can be up
to 1 MHz in either direction.
Figure 10 shows all ranges referring to one counter. The module is capable of
individually assigning each range to any counter. Each counter can also have a
combination of count and rate ranges.
Figure 10 - Rate Range Example
IMPORTANT The Rate Range information does not apply to the packaged controller.
-1,000,000 1,000,000 0
Ctr[0].CurrentRate
Range 4 Range 1 Range 2 Range 4
Output 0
Output 1
Output 2
Output 3
On
Off
Range 3
Table 10 - Rate Range Example Values
Range Range
Counter
Number Range
Type
(1)
Range
Low
Limit
Range
High
Limit
Range
Invert
Bit
Outputs
(2)
(Range[n].OutputControl word)
Outputs
Affected 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1 00 1 -7000 -5000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
2 00 1 -1000 4500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
3 00 1 -4000 3000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2
4 00 1 -20,000 20,000 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 and 3
(1) For Range Type, 0 = count range and 1 = rate range.
(2) Bits 0…3 are real outputs. Bits 4…15 are virtual outputs.