Mitsubishi MELSEC iQ-F, User Manual

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4 FUNCTIONS
4.13 Logging Function
61
4
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.
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.
*1 Values after the decimal point are omitted.
Ex.
With the following settings, the conversion cycle is 240 ms and the actual logging cycle is every 6720 ms (integral multiple of
240 ms).
The following values are stored in 'CH3 Logging cycle monitor value' (Un\G841, Un\G842).
Setting value of 'CH1 Logging cycle unit setting' (Un\G538) Setting range of 'CH1 Logging cycle setting value' (Un\G537)
ms (1) • 1 to 32767 (When the input range is “current”, and “voltage”)
• 40 to 32767 (When the input range is thermocouple, and resistance
temperature detector)
s (2) 1 to 3600
Temperature
conversion
method Input type Conversion cycle
Sampling
processing Current/Voltage Conversion speed (1 ms)
×
Number of channels where the A/D conversion is enabled
RTD/Thermocouple Conversion speed (40 ms) × Number of channels where the temperature conversion is enabled
Time average Current/Voltage
RTD/Thermocouple
Count average Current/Voltage (The count set to CH1 Time average/Count average/Moving average) × (Conversion speed (1ms) × Number of
channels where the A/D conversion is enabled)
RTD/Thermocouple (The count set to CH1 Time average/Count average/Moving average) × (Conversion speed (40ms) × Number of
channels where the temperature conversion is enabled)
Moving average Current/Voltage Conversion speed (1 ms)
×
Number of channels where the A/D conversion is enabled
RTD/Thermocouple Conversion speed (40 ms) × Number of channels where the temperature conversion is enabled
Item Setting
Conversion enabled channels CH1 to CH8
CH3 Logging data setting Digital output value
CH1, 2 average processing specification Sampling processing (Current)
CH3 to 8 average processing specification Sampling processing (Thermocouple)
CH3 Logging cycle setting value 6950
CH3 Logging cycle unit specification ms
Buffer memory address Item Stored value
841 'CH3 Logging cycle monitor value' (Un\G841, Un\G842) 6 (s)
842 720 (ms)
*1
Time set in Time average/Count average/Moving average
Number of A/D conversion enabled channels × Conversion speed (1 ms)
× ×
Conversion
speed (1 ms)
Number of
A/D conversion
enabled channels
*1
Time set in Time average/Count average/Moving average
Number of temperature conversion enabled channels × Conversion speed (40 ms)
× ×
Conversion
speed (40 ms)
Number of
temperature conversion
enabled channels