Siemens Simatic S7-1500 Manuel de l'équipement - Page 12

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Principle of operation

The module counts the switching cycles by evaluating the rising edges of an output signal. If

the module detects a rising edge, the switching cycle counter (24-bit) for the respective

channel is incremented. After an overflow of the switching cycle counter, it starts again with

If you activate the "Maintenance switching cycles" parameter, the "Limit warning" of the

maintenance interrupt is triggered when the limit is exceeded. Alternatively, activate the

maintenance alarm in the parameter data records starting at DS 64.

The current counter states are stored on the module cyclically (approx. every 20 seconds) and

retentively. The switching cycle counters are reset each time the module is restarted (power

off/on).

You activate the function with the "Switching cycle counter" parameter or in the parameter

data sets starting at DS 64.

You can read the current counter states with data set DS 129. Data set DS 129 contains the

counter status for each channel in UDINT format.

You can read the limits for each channel in UDINT format with data set DS 130.

Data set DS 131 enables you to overwrite the current counter value for each switching cycle

counter.

You can set a limit for each switching cycle counter with the "Switching cycle limit" parameter

or with data set DS 131.

Digital output module DQ 16x230VAC/1A ST Triac (6ES7522-5FH00-0AB0)

Equipment Manual, 12/2021, A5E34934069-AC

Product overview

2.2 Functions