Mitsubishi Electric MELSEC iQ-R Series User Manual page 44

Logging cycle
■Logging cycle setting
Set the logging cycle with 'CH1 Logging cycle setting value' (Un\G537) and 'CH1 Logging cycle unit setting' (Un\G538).
The following table lists the setting range for each cycle.
Setting value of 'CH1 Logging cycle unit setting' (Un\G538)
ms (1)
s (2)
The logging cycle must be an integral multiple of the conversion cycle. Even if the setting is not an integral multiple, the actual
logging cycle is adjusted to the integral multiple of the conversion cycle within a limit of the set logging cycle.
The following table lists the conversion cycle for each temperature conversion method.
Temperature conversion
method
Sampling processing
Time average
Count average
Moving average
Primary delay filter
*1 Values after the decimal point are omitted.
*2 The conversion speed is 30ms for the thermocouple input module, 10ms for the RTD input module.
Ex.
With the thermocouple input module having the following settings, the conversion cycle is 240ms and the actual logging is
performed every 6960ms (integral multiple of 240ms) cycle.
• Conversion enabled channel: CH1 to CH8
• CH1 Averaging process specification: Sampling processing
• CH1 Logging cycle setting value: 7000
• CH1 Logging cycle unit setting: ms
The following values are stored in 'CH1 Logging cycle monitor value' (Un\G441, Un\G442).
Buffer memory address
441
442
■When the logging function becomes disabled
The logging is not performed when even one of the following errors occurs after the logging function is enabled and 'Operating
condition setting request' (Y9) is turned on and off.
• Error code (192H to 195H): Setting errors of 'CH1 Time average/Count average/Moving average/Primary delay filter
constant setting' (Un\G502)
• Error code (1D0H to 1D6H): Setting errors of the logging function
• Error code (1D8H, 1D9H): Setting errors of the logging read function
When 'Operating condition setting request' (Y9) is turned on and off on the condition that the logging cycle
determined by 'CH1 Logging cycle setting value' (Un\G537) and 'CH1 Logging cycle unit setting' (Un\G538) is
shorter than the conversion cycle, an error occurs and logging does not start. A logging cycle setting disable
error (error code: 1D2H) is stored in 'Latest error code' (Un\G0), 'Error flag' (XF) and the ERR LED turn on.
1 FUNCTIONS
42
1.10 Logging Function
Conversion cycle
*2
 Number of channels where the temperature conversion is enabled
Conversion speed
Time set in Time average/Count average/Moving average
/Primary delay filter constant setting
Number of conversion enabled channels × Conversion speed
(The count set to CH1 Time average/Count average/Moving average/Primary delay filter constant setting)  (Conversion
*2
 Number of conversion enabled channels)
speed
*2
 Number of channels where the temperature conversion is enabled
Conversion speed
*2
 Number of channels where the temperature conversion is enabled
Conversion speed
Item
'CH1 Logging cycle monitor value' (Un\G441, Un\G442)
Setting range of 'CH1 Logging cycle setting value' (Un\G537)
• 30 to 32767 (for the thermocouple input module)
• 10 to 32767 (for the RTD input module)
1 to 3600
*1
Number of conversion
×
enabled channels
s
ms
*2
× Conversion speed
Stored value
6
960