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App-10
• Size of the data section of one report data set
The following equation can be used to derive the size of data section of one report
data.
Carriage return line feed + date and time of cr status (11
×
number of
channels that are output) + carriage return line feed + average value (5 + 14
×
number of channels that are output) + carriage return line feed + maximum
value (5 + 14
×
number of channels that are output) + carriage return line feed +
minimum value (5 + 14
×
number of channels that are output) + carriage return
line feed + sum value (5 + 14
×
number of channels that are output) + carriage
return line feed
• The size of the date and time of creation is fixed to 16 bytes.
• The size of the carriage return line feed is fixed to 2 bytes.
Calculation example
Monthly data for 30 channels
2 + 16 + (11
×
30) + 2 + (5 + 14
×
30) + 2 + (5 + 14
×
30) + 2 + (5 + 14
×
30) + 2 + (5 +
14
×
30) + 2 = 2058 bytes
• Number of report data sets and file size
The file size varies depending on the number of report data sets as follows.
• One report data set of monthly reports
Size of the header s size of the data section of one report data set = 3055
bytes
• 40 report data sets
*
of monthly reports
Size of the header s 40
×
size of the data section of one report data set =
83317 bytes
*
40 report data sets is the maximum number of report data sets that can be written in the
internal memory. If there are more than 40 data sets, they are cleared starting with the
oldest data set.
Note
•
When the measurement and computation channel data enter the condition described in the
following table, status “E” and “O” are output in the report.
Data Condition
Status
Common to measurement and computation channels
Measurement error or computation error
E
For measurement channels
Plus (+) over range
O
Minus (–) over range
O
Over range occurs when the input type is voltage and the input exceeds
±
5% of the
measurable range.
For example, consider the case when the measurement range is 2 V and the measurable
range is from –2.000 to 2.000 V. If the input signal exceeds 2.200 V, + over range occurs.
If the input signal falls below –2.200 V, – over range occurs.
Over range occurs when the input type is TC (thermocouple) or RTD (resistance
temperature detector) and the input exceeds approximately
±
10
°
C of the measurable
range. For example, consider the case when the measurement range is R and the
measurable range is from 0.0 to 1760.0
°
C. If the input signal exceeds approximately
1770.0
°
C, + over-range occurs. If the input signal falls below approximately –10.0
°
C, –
over range occurs.
For computation channels
+ computation overflow (when the value exceeds 3.4E + 38)
O
– computation overflow (when the value falls below –3.4E + 38)
O
Appendix 2 Data Formats of ASCII Files
Содержание RD-MV100 Series
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