Operating hours counter
8.2 Preset and apply start values for operating hours counters
Analog input module AI Energy Meter 480VAC/CT HF (6ES7134-6PA00-0CU0)
Manual, 07/2018, A5E42674880-AA
73
Apply start values from data record DS 143 immediately
Applying the start values for each separate operating hours counter is possible.
In your STEP 7 project you have created a PLC data type that has an identical structure to
data record DS 143 and you have entered the start values.
Procedure for all module versions
1. In Control byte 1 of DS 143 (bytes 2, 4 and 6), for each phase, define that you want to
immediately apply the start values for operating hours counters.
– Set the Bit 3 to 1 so that the start values for the operating hours counters are preset.
– Set the Bit 7 to 0 so that the module
applies the start values after writing
the data record.
Figure 8-1 Allocation of the control bytes in DS 143 for operating hours
2. Transfer the data record with the WRREC instruction to the CPU.
Apply start values from data record DS 143 with DQ bit
Due to the differing lengths of the output data, setting of the start values for the operating
hours counters depends on the configured module version.
Module versions with 20 bytes of output data
If you use module versions with 20 bytes of output data, you can:
● Apply start values for
operating hours counters.
● Apply start values for
operating hours counters separately.
Module version with 2 bytes of output data
If you use the module version with 2 bytes of output data, apply the start values for
operating hours counters simultaneously.
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