Omron C200H Operation Manual page 39

Functions and Programming
Mean Value Processing and
Disconnection Detection
Mean value
processing
Input Disconnect Flag
Output data
The following diagram shows how a disconnection detection affects the results
(output data) produced by the mean value function.

n  (n+1)
th th
time
É É É
É É É
Result of
Result of 
Disconnection detected
Result
Result of
Result of 
prior to

Result of
:
Mean value of samples collected before disconnection
(Samples collected in the shaded region. See note 1.)
Result of :
0000 or the lower-limit value (when scaling is being executed)
Result of :
0000 or the lower-limit value (when scaling is being executed)
Result of :
Mean value of samples collected after reconnection
(Samples collected in the shaded region. See note 1.)
1. The result of  is used if 2 or fewer samples are collected.
Note
2. The input disconnection detection function will operate only when the input's
corresponding conversion prohibit bit is OFF (bits 00 to 07 of DM m). If an
input isn't being used or isn't connected, its Input Disconnect Flag will be
turned ON unless its conversion prohibit bit is turned ON.
3. If a disconnection occurs while the limit warning function is being used, both
the Input Disconnect Flag and the Limit Warning Flag will be turned ON.
4. If a disconnection occurs while the peak hold function is being used, the
peak value will be maintained.
5. The disconnection detection function is valid only when the input signal
range is set at 1 to 5 V/4 to 20 mA.
 m
th
time
É É É
É É É
Result of 
Disconnection repaired
Result of 
Section 2-3
time
Result of 
Result of 
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