Siemens CU240S DP Installation Manual download pdf (Page 24)

7 Background information

SINAMICS G120 (CU240S DP) Control via PROFIBUS

V1.0, Beitrags-ID: 45288241

7.2.2 DB1, Axis_DB

The Axis_DB represents the interface between the S7 program and the SINAMICS

G120 via FC100.

Axis_DB is generated from UDT 1 (Axis_DB_G120)

Principal structure of Axis_DB:

Address Symbolic name Type Function

Internal data

DBW0 Basic_Data.Moduleadress INT

I/O start address of the SINAMICS G120 (refer to

HW Config)

DBB3 Basic_Data.Drivetyp Byte Drive type, must be 2

S7 -> SINAMICS G120

DBW4 Control_signals.STW2 Bool Control word 2 (for details, refer to the S7 program)

DBW6 Control_signals.STW1 Bool Control word 1 (for details, refer to the S7 program)

DBW8 Control_signals.Frequency_set INT Frequency setpoint in x.x %

DBW10 Control_signals.Torque_set INT Torque setpoint in x.x %

SINAMICS G120 -> S7

DBW14 Status_signals.ZSW2 Bool Status word 2 (for details, refer to the S7 program)

DBW16 Status_signals.ZSW1 Bool Status word 1 (for details, refer to the S7 program)

DBW18 Status_signals.Actual_frequency INT Frequency actual value in x.x %

DBW20 Status_signals.Actual_current INT Current actual value (Value from SINAMICS G120)

DBW22 Status_signals.Actual_current_A INT Current actual value in x.xx A

Error messages

DBW24 Faults.Drive_error_number INT Actual error number of the SINAMICS G120

DBW26 Faults.Drive_alarm_number INT Actual alarm number of the SINAMICS G120

In this function example the individual data of the DB1 are supplied in FB10.

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Siemens CU240S DP Installation Manual Page 24