Plc User Program For Sinumerik 840D Sl Programming - Siemens SINUMERIK 840D sl Ctrl-Energy System Manual

DB1001
Name: SentronPac
DB1001.DBD(124+n)
DB1001.DBD(128+n)
3.3.1.1

PLC user program for SINUMERIK 840D sl programming

Via the expansion modules, SENTRON PAC devices provide the total active power in the unit
W and the active energy data in Wh. In HMI the units kW and kWh are used.
PLC basic program
The PLC basic program offers the following functions:
● Provision of the total active power [kW]
● Provision of the values for imported and exported active energy [kWh]
month and the previous year.
The values of the current time periods are updated in every cycle. If one of the time periods
changes (new day, new month or new year) then the "current" variables of the time period
that changes is copied into its previous day, previous month or previous year variables and
the "current" variables are accumulated again starting from 0.
● Two measuring procedures for imported and exported active energy [kWh]
– Measuring carried out by the basic program
– The user calculates and writes the measured values
The two values of measured imported energy [kWh] (DBD12) and the measured exported
energy [kWh] (DBD16) are made available for the HMI. The source of the values as well as
measuring procedure and measuring duration (start, stop) are defined using measurement
control bits.
Programming the PLC user program
● You take the total active power from the input address and transfer the value to
DB1001.DBD20.
● You take the imported active power from the input address and transfer the value to
DB1001.DBD24.
● You take the exported active power from the input address and transfer the value to
DB1001.DBD28.
Ctrl-Energy
System Manual, 01/2015, 6FC5397-0EP40-5BA2
Signal
direction
GP ->
HMI
GP ->
HMI
for the current day, month and the current year as well as for the previous day, previous
This allows user-specific measuring routines to be implemented.
3.3 Commissioning the PLC for Ctrl-E Analysis
Meaning
Active energy drawn by
the auxiliary system at
the measurement end in
kWh
Active energy supplied by
the auxiliary system at
the measurement end in
kWh
Ctrl-E Analysis
Identifier
ActiveEnAuxMeasOFF
ReActiveEnAuxMeasOFF
Format
REAL
REAL
27