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Energy counters

7.3 Starting and and stopping energy meters

Analog input module AI Energy Meter 480VAC/CT HF (6ES7134-6PA00-0CU0)

Manual, 07/2018, A5E42674880-AA

Procedure for module version with 2 bytes of output data

If you use the module version with 2 bytes of output data, always apply the start values

for all

the energy counters and overflow counters.

● Set the reset bit (Bit 7) in byte 1 of the output data.

Figure 7-7 Reset bit for all energy and overflow counters

If there is an edge change of the reset bit from 0 -> 1, the module resets

all

energy and

overflow counters to their start values.

7.3

Starting and and stopping energy meters

There are two ways of starting or stopping measurement with the energy meter AI Energy

Meter HF:

● Counting with gate

The module starts counting when you set the DQ bit for the counter gate in the output

data using an edge change from 0 -> 1. If you reset the DQ bit using an edge change

from 1 -> 0, the counter stops.

● Counting without gate

The module starts counting immediately as soon as the module is switched on. Counting

cannot be stopped.

Both options are described in the following sections.

Siemens SIMATIC ET 200SP User Manual

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