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INOVANCE TECHNOLOGY EUROPE GmbH 
MD800 EtherCAT Starting Guide_EN_v1.1_20211109.docx 
6.3.2.2  TPDO – DESCRIPTION OF DATA TRANSMITTED FROM MD800 
Each of the devices of the MD800 transmit information to the EtherCAT master in its own TPDO area. This area 
is described below: 
 
Index: 
0x2070 
 
SubIndex: 
0x45 
 
Inverter running status information. The operating status 
information of the inverter is defined by bits, as follows:  
 
Bit0: 0 inverter stops, 1 inverter runs  
Bit1: 0 forward running, 1 reverse running  
Bit2: 0 no fault, 1 inverter fault  
Bit3: 0 running frequency is not up to standard, 1 running 
frequency is reached 
Index: 
0x2070 
 
SubIndex:  
0x1 
Inverter operating frequency (unit: 0.01Hz) Returns the 
actual operating frequency of the current inverter, the 
returned data value is 16bit unsigned data 
 
6.3.3  SDO MAILBOX DATA 
EtherCAT SDO is used to transmit asynchronous data, such as communication, configuration and servo drive 
running parameter configuration. The EtherCAT CoE service types include: 
•  Critical event message 
•  SDO request 
•  SDO response 
•  TxPDO 
•  RxPDO 
•  Remote TxPDO transmit request 
•  Remote RxPDO sending request 
•  SDO information 
Currently, the AC drive supports SDO requests and responses. For details about SDO-related parameters, see 
the MD800 user guides.