KEPID AMSTECH CO. LTD. EMU11A Manuale Utente

4. Software Interfaces 

 

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4.1.10  Recording interval time (register 64) 

Energy is integrated based on the recording time interval that is configurable. 

The normal energy is calculated based on the period of five minutes with nominal 

current and nominal input voltage. 

The last completed interval values are stored in the register map. 

The time-stamp is set in the time-stamp register at the end of the integration interval. 

  Registers: 32 to 43 

 

4.1.11  Recording interval-based energy 

The recording interval time is a configurable parameter that defines the recording 

interval (minutes). It can have values for 5, 6, 10, 12, 15, 20, and 30. 

The start of an interval is at the hour + n* interval.   

When writing a value different from the ones listed to this parameter, it is discarded and 

the EMU continues to use the previous set value. 

Note that the EMG responds with an "ACK" to a write of an invalid value as it does not 

check the contents of the message sent to the EMU. 

 

4.1.12 Time stamp 

The time stamp of the recording interval have the same format that uses three Modbus 

registers. 

Each of the registers is split into two parts as shown in the following table. 

24 28 

Minute 

Second 

25 29 

Day 

Hour 

26 30 

Year 

Month 

 

4.1.13 Frequency (register 27) 

The Line Frequency is measured based on the phase of the power supply only (phase 

1). The last value of the recording interval is stored in this register.