Siemens SINAMICS G120 Operating Instructions Manual page 9

8.4.3.1 Modbus ......................................................................................................................................121
8.4.3.2 Basic settings for communication ..............................................................................................122
8.4.3.3 Modbus RTU telegram...............................................................................................................123
8.4.3.4 Baud rates and mapping tables .................................................................................................124
8.4.3.5 Write and read access via FC 3 and FC 6.................................................................................127
8.4.3.6 Communication procedure.........................................................................................................129
8.5 Communication via CANopen....................................................................................................131
8.5.1 Configuring communication to the control .................................................................................132
8.5.2 CANopen functionality of the inverter ........................................................................................132
8.5.3 Commissioning CANopen..........................................................................................................133
8.5.3.1 Setting the node ID and baud rate.............................................................................................133
8.5.3.2 Monitoring the communication and response of the inverter.....................................................134
8.5.3.3 SDO services .............................................................................................................................135
8.5.3.4 Access to SINAMICS parameters via SDO ...............................................................................138
8.5.3.5 PDO and PDO services .............................................................................................................140
8.5.3.6 Predefined connection set .........................................................................................................143
8.5.3.7 Free PDO mapping ....................................................................................................................144
8.5.4 Further CANopen functions .......................................................................................................145
8.5.4.1 Network management (NMT service) ........................................................................................145
8.5.5 List of objects .............................................................................................................................148
8.5.5.1 Free objects ...............................................................................................................................155
8.5.5.2 Objects in drive profile DSP402 .................................................................................................156
8.5.6 Engineering example .................................................................................................................156
9 Functions ............................................................................................................................................... 159
9.1 Overview of the inverter functions..............................................................................................159
9.2 Converter control .......................................................................................................................161
9.2.1 Switching the motor on and off ..................................................................................................161
9.2.2 Inverter control using digital inputs ............................................................................................163
9.2.2 Two-wire control: method 1........................................................................................................164
9.2.3 Two-wire control, method 2........................................................................................................165
9.2.4 Two-wire control, method 3........................................................................................................166
9.2.5 Three-wire control, method 1 .....................................................................................................167
9.2.6 Three-wire control, method 2 .....................................................................................................168
9.2.7 Running the motor in jog mode (JOG function) .........................................................................169
9.2.8 Switching over the inverter control (command data set) ...........................................................171
9.3 Command sources.....................................................................................................................173
9.4 Setpoint sources ........................................................................................................................174
9.4.1 Analog input as setpoint source.................................................................................................175
9.4.2 Motorized potentiometer as setpoint source..............................................................................175
9.4.3 Fixed speed as setpoint source .................................................................................................178
9.4.4 Specifying the motor speed via the fieldbus ..............................................................................180
9.5 Setpoint preparation...................................................................................................................181
9.5.1 Overview of setpoint processing ................................................................................................181
9.5.2 Invert setpoint.............................................................................................................................181
9.5.3 Inhibit direction of rotation..........................................................................................................182
9.5.4 Minimum speed..........................................................................................................................182
9.5.5 Maximum speed.........................................................................................................................183
9.5.6 Ramp-function generator ...........................................................................................................183
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
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