Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 391)

App-22
IM 04L31A01-01E
Note
• If the status of the data of measurement/computation channels is as shown 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
Positive overrange
O
Negative overrange O
For computation channels
Positive (+) computation overflow (when the value exceeds 3.4E + 38)
O
Negative (–) computation overflow (when the value falls below –3.4E + 38) O
• The data of computation/measurement channels that resulted in measurement/
computation errors when determining MAX or MIN are not applicable.
• The data of computation/measurement channels that resulted in measurement/
computation errors, overrange, or computation overflow when determining AVE or SUM
are not applicable.
• The report output values of AVE, MAX, MIN, and SUM are as shown in the following table
depending on the data condition of the measurement/computation channels.
Item Data Condition of Measurement Channels Report Output Value
AVE When all of the data is measurement errors or (Blank)
(Average value) over range
MAX, MIN • When all of the data are measurement errors (Blank)
(Maximum, minimum) • Positive (+) over range 99999
• Negative (–) over range –99999
SUM • When all of the data is measurement errors or (Blank)
(Sum value) over range
• When the sum value exceeds approx. 3.4E + 38 9.999999E+99
• When the sum value is below approx. –3.4E + 38 –9.999999E+99
Item Data Condition of Computation Channels Report Output Value
AVE When all of the data are computation errors or (Blank)
(Average value) computation overflow
MAX, MIN • When all of the data are computation errors (Blank)
(Maximum, minimum) • When the maximum value exceeds 99999999 999999999
• When the minimum value is –9999999 –99999999
The decimal position that was specified when the span for the channel was specified
applies to the maximum and minimum values. For example, if the span setting of the
channel is “200.0,” then “99999999” is output when the value exceeds “99999999.9” and
“–99999999” is output when the value is below “–999999.9.”
SUM • When all of the data are computation errors or (Blank)
(Sum value) computation overflow
• When the sum value exceeds approx. 3.4E + 38 9.999999E+99
• When the sum value is below approx. –3.4E + 38 –9.999999E+99
Appendix 5 Data Format of ASCII Files