Mitsubishi Electric RD62P2E - Page 65

APPENDICES
Appendix 3 Buffer Memory Areas
63
A
CH1 Overflow detection
• When the counter type is set to linear counter in the pulse count mode, or when the pulse measurement mode is set, the
overflow status of the counter is stored in this area.
• Either of the following values is stored based on the overflow status.
■Buffer memory address
The following shows the buffer memory address of this area.
CH1 Counter function selection setting
• A value to select the counter function is stored in this area.
• The following table shows the setting value for each function.
■Buffer memory address
The following shows the buffer memory address of this area.
CH1 Sampling/cycle time setting
A time value for the sampling counter function or cycle pulse counter function is stored in this area.
■Setting range
• The setting range is between 1 and 65535 (16-bit unsigned binary value).
• The unit of time differs depending on the counting speed setting.
Ex.
When 500kpps is set in the counting speed setting and 420 is set in CH1 Sampling/cycle time setting (Un\G10), the function
operates at 4200ms (420  10ms).
■Buffer memory address
The following shows the buffer memory address of this area.
Status Stored value
No overflow detected 0
Overflow detected 1
Buffer memory address name CH1 CH2
CH Overflow detection 8 40
Counter function selection Setting value
Count disable function 0
Latch counter function 1
Sampling counter function 2
Cycle pulse counter function 3
Buffer memory address name CH1 CH2
CH Counter function selection setting 9 41
Counting speed setting Time unit
500kpps or less 10 ms
1Mpps or more 1 ms
Buffer memory address name CH1 CH2
CH Sampling/cycle time setting 10 42