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In the example the encoder (ID = 5) receives from the PLC via the ID 0605h (Receive
SDO 0600h + encoder ID) a read request (CCD = 40h) for the object 1000h
The encoder responds via ID 0585h (Transmit SDO 0580h + encoder ID) with the
return message (CCD = 43h) 0200h = multiturn encoder, 9601h device profile =
encoder.
5.7
Process Data Objects (PDO)
Process data objects (PDO) are used for the quick and efficient exchange of real time
data (e.g. I/O data, set or actual values).
A PDO is transmitted without acknowledgment.
The AHS/AHM36 CANopen and AHS/AHM36 CANopen Inox supports one Receive PDO
and four Transmit PDOs.
Figure 12: Example for Transmit PDO and Receive PDO
8 data bytes are available on the transmission of the process data.
Table 29: Format of the Transmit PDOs
COB-ID
Data
0180h +
Node-ID
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
5
INTEGRATION IN CANOPEN
30
O P E R A T I N G I N S T R U C T I O N S | AHS/AHM36 CANopen
AHS/AHM36 CANopen Inox
8016869/1EF3/2021-12-08 | SICK
Subject to change without notice