Maximum count, Reset value, Important – Rockwell Automation 1746-HSCE,D17466.5 High-Speed Counter Module User Manual
Page 95
Publication 1746-UM006B-EN-P - August 2005
Configuration and Programming 4-35
M0:e.41 Maximum Count (Static) / Reset Value (Dynamic)
Maximum Count
When the module is configured as a Ring Counter type, this word
allows you to specify the ring rollover count. The range of this value
is 1 to +32767. If 0, a configuration error occurs.
The example below specifies a rollover count of 32,767.
Reset Value
When the module is configured for a linear counter, the counter is
reset to the value you enter in this word. This word allows you to
initialize the counter, when a reset condition occurs, to a specific
value other than zero. The range of this value is -32767 to +32767.
The example below illustrates reset values of -32,767 and +32,767.
IMPORTANT
Resetting to a non zero value takes more time than
resetting to zero. It is possible to lose counts while a
non zero value is being loaded into the counter.
Refer to Timing Information in Appendix A.
Maximum Count / Reset Value
Bit Number (decimal)
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
M0:e.41
Maximum Count
Bit Number (decimal)
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
= +32767
M0:e.41
Reset Value
Bit Number (decimal)
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
= +32767
Reset Value
Bit Number (decimal)
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
= –32767
M0:e.41
M0:e.41