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10 PLC process data image
10.1 Address model of the RFID evaluation unit with EtherCAT interface
Device and channel
configuration
SDO 0x4000-4004
Startup settings:
- Ident Unit parametrization
- Channel mode selection
- Channel parametrization
EtherCAT
bus interface
DTE103
Data Exchange Mode
Payload length 4 x 20 bytes = 80 bytes
Tx PDO 0x3000:1
Rx PDO 0x2000:1
Supported mode
Inactive ( 20 Byte In/Out )
Input ( 20 Byte In/Out )
Output ( 20 Byte In/Out )
RWH_RW ( 20 Byte In/Out)
Data content
Data of selected mode
with diagnostics of channel
IO-1 interface
IO-2 interface
IO-3 interface
IO-4 interface
ETHERNET Frame
Con
fi
gura
ti
on
with
TwinCAT System Manager
Sync Manager 0
Sync Manager 1
Sync Manager 2, 0x1A00, TxPDO (DTE103 -> PLC)
Sync Manager 3, 0x1600, RxPDO (PLC -> DTE103)
Tx PDO 0x3000:2
Rx PDO 0x2000:2
Supported mode
Inactive ( 20 Byte In/Out )
Input ( 20 Byte In/Out )
Output ( 20 Byte In/Out )
RWH_RW ( 20 Byte In/Out)
Data content
Data of selected mode
with diagnostics of channel
Supported mode
Inactive ( 20 Byte In/Out )
Input ( 20 Byte In/Out )
Output ( 20 Byte In/Out )
RWH_RW ( 20 Byte In/Out)
Data content
Data of selected mode
with diagnostics of channel
Supported mode
Inactive ( 20 Byte In/Out )
Input ( 20 Byte In/Out )
Output ( 20 Byte In/Out )
RWH_RW ( 20 Byte In/Out)
Data content
Data of selected mode
with diagnostics of channel
Tx PDO 0x3000:3
Rx PDO 0x2000:3
Tx PDO 0x3000:4
Rx PDO 0x2000:4
The configuration data and the process data of the evaluation unit are transferred over the EtherCAT
connection . The PLC act as requestor, the evaluation unit as responder .
10.1.1 Process data input image
Each IO channel occupies 20 bytes of the PLC process data input, regardless if it is activated or not . Total
size is fixed to 80 bytes .
10.1.2 Process data output image
Each IO channel occupies 20 bytes of the PLC process data output, regardless if it is activated or not .
Total size is fixed to 80 bytes