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Chapter 2 – Communication Profile
CD1-k – CANopen Communication Profile
Chapter 2 – Communication Profile
2.1 - COMMUNICATION OBJECTS
2.1.1 - CAN TELEGRAM
SOM COB-ID RT
R
CTRL Data segment
CRC ACK EOM
SOM :
Start Of Message
COB-ID :
COB-Identifier of 11 bits
RTR :
Remote Transmission Request
CTRL: Control
field
Data :
up to 8 bytes
CRC :
Cyclic Redundancy Check
ACK :
Acknowledge
EOM :
End Of Message
2.1.2 - DEFAULT COB-ID
The COB-ID is of 11 bits. Node-ID (bits 0 - 6) is the drive address from 1 to 127.
10 9 8 7 6 5 4 3 2 1 0
Function Code
NODE-ID
Default COB-ID for the CD1-k drive:
Broadcast objects of the pre-defined connection set:
Object
Function Code
Resulting COB-ID
Communication Parameter at Index
NMT 0000 0
-
SYNC
0001
128 (80h)
1005h, 1006h, 1007h
Peer-to-peer objects of the pre-defined connection set:
Object
Function Code
Resulting COB-ID
Communication Parameter at Index
EMERGENCY
0001
129 (81h) - 255 (FFh)
1014h
PDO1 (TX)
0011
385 (181h) - 511 (1FFh)
1800h
PDO1 (RX)
0100
513 (201h) - 639 (27Fh)
1400h
PDO2 (TX)
0101
641 (281h) - 767 (2FFh)
1801h
PDO2 (RX)
0110
769 (301h) - 895 (37Fh)
1401h
PDO3 (TX)
0111
897 (381h) - 1023 (3FFh)
1802h
PDO3 (RX)
1000
1025 (401h) - 1151 (47Fh)
1402h
SDO (TX)
1011
1409 (581h) - 1535 (5FFh)
1200h
SDO (RX)
1100
1537 (601h) - 1663 (67Fh)
1200h
TX = Transmit from drive to master
RX = Receive by drive from master