DB9907
Name: SentronPac
Signal
direction
Meaning Identifier Format
DB9907.DBD(116+n) FW ->
HMI
Active energy drawn by
the auxiliary system at
the measurement start in
kWh
ActiveEnAuxMeasON REAL
DB9907.DBD(120+n) FW ->
HMI
Active energy supplied by
the auxiliary system at
the measurement start in
kWh
ReActiveEnAuxMeasON REAL
DB9907.DBD(124+n) FW ->
HMI
Active energy drawn by
the auxiliary system at
the measurement end in
kWh
ActiveEnAuxMeasOFF REAL
DB9907.DBD(128+n) FW ->
HMI
Active energy supplied by
the auxiliary system at
the measurement end in
kWh
ReActiveEnAuxMeasOFF REAL
3.3.2.1 Programming the PLC user program for SINUMERIK 828D
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 firmware
The PLC firmware offers the following functions:
● Provision of the total active power [kW]
● Provision of the values for imported and exported active energy [kWh]
for the current day, month and the current year as well as for the previous day, previous
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]
– Measurement carried out by the PLC firmware (see "Measurement control HMI → FW
and PLC → FW")
– The user calculates and writes the measured values
This allows user-specific measuring routines to be implemented.
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.
Ctrl-E Analysis
3.3 Commissioning the PLC for Ctrl-E Analysis
Ctrl-Energy
System Manual, 01/2015, 6FC5397-0EP40-5BA2 33
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