Mitsubishi Electric MELSEC iQ-RX40NC6B, Application User'S Manual

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1 FUNCTIONS
1.1 Input Function
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1
Number of input ON times integration function
This function counts the number of times that an external input turns on.
When the number of input ON times alarm detection count has been set and the number of input ON times reaches the set
value, an alarm occurs.
Number of input ON times integration
The input module with diagnostic functions counts the number of times that an external input turns on in the range from 0 to
4294967295.
When the number of input ON times exceeds the maximum value, the count stops. To continue the count, clear the number of
input ON times with 'Number of input ON times value clear request' (Un\G3584). (The count starts from 0.)
The number of input ON times is counted for each external input. Only for the input for which "Input ON Number Count
Function enable/disable" is set to "Enable", the number of input ON times is counted.
The number of input ON times is stored in 'Number of input ON times' (Un\G2848 to Un\G2879).
• When the input delay function is enabled, the number of input ON times is counted at the timing when the
delayed input turns on.
• The number of input ON times is recorded in the non-volatile memory of the input module with diagnostic
functions every second and at power-off. The number of input ON times recorded in the non-volatile
memory is restored in 'Number of input ON times' (Un\G2848 to Un\G2879) when the power is turned on or
the CPU module is reset. Therefore, the number of input ON times is held even if the power is turned off or
the CPU module is reset.
■ Operation of the number of input ON times integration function
The following figure shows an operation example of the number of input ON times integration function.
ON
OFF
ON
OFF
0 1 2 3 4
Input signal in the module (X0)
'Number of input ON times'
(Un\G2848 to Un\G2849)
External input (X0)