Mitsubishi Electric MELSEC-Q series User Manual page 129

(b) Actual logging cycle
The actual logging cycle is an integral multiple of the conversion cycle of digital output value or scaling value.
The conversion cycle of each conversion method is as follows.
Digital
conversion
method
Sampling
Sampling cycle
processing
Time average
(Times set in (CH Average time/Average number of times/Moving average/Time constant settings
Count average
(Un\G1 to Un\G8)) × Sampling cycle
Moving average Sampling cycle
Primary delay filter Sampling cycle
*1 The value after the decimal point is rounded off.
If the set logging cycle is not an integral multiple of the conversion cycle, the logging function operates in the
maximum cycle of an integral multiple within the setting range.
The processing time for the following settings is calculated below:
Ex.
• Averaging process setting (Un\G24, Un\G25): Sampling processing (0)
• Sampling cycle setting (Un\G26): 100ms/8CH (3)
• CH Logging data setting (Un\G1024 to Un\G1031): Digital output value (0)
• CH Logging cycle setting value (Un\G1032 to Un\G1039): 1950
• CH Logging cycle unit setting (Un\G1040 to Un\G1047): ms (1)
The conversion cycle is 100ms. The actual logging cycle is 1900ms (an integral multiple of 100ms).
When Update cycle (0) is set to Logging cycle unit setting, the logging is performed in the conversion cycle of the logging
target data. In this case, the setting of CH Logging cycle setting value (Un\G1032 to Un\G1039) is ignored.
(c) Enabling the setting
Turn on then off Operating condition setting request (Y9) to enable the setting.
(d) Default value
• For CH Logging cycle setting value (Un\G1032 to Un\G1039), all channels are set to 300.
• For CH Logging cycle unit setting (Un\G1040 to Un\G1047), all channels are set to Update cycle (0).
Time set to CH Average time/Average number of times/
Moving average/Time constant settings (Un\G1 to Un\G8)
Sampling cycle
CHAPTER 6 BUFFER MEMORY
Conversion cycle
*1
Sampling cycle
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