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•
SDO access to the manufacturerspecific object 2009h – Network Configuration
•
access via Layer Setting Services
There can be a maximum of 128 devices in a CANopen network, one master and up to
127 slaves. Each device is given a unique node ID (node address).
The COB-IDs (Communication Object Identifier) derive the communication channels
from this ID.
Table 4: Communication object identifier for the encoder
COBID calculation
[Dec]
[Hex]
ID ranges
[Dec]
[Hex]
Function
Direction as
seen from
the encoder
0
0
Network management Receive
128 + Node-ID
0080h + Node-ID
129 … 255
0081h … 00FFh
Emergency Message
Send
384 + Node-ID
0180h + Node-ID
385 … 511
0181h … 01FFh
Transmit-PDO 1
Send
512 + Node-ID
0200h + Node-ID
513 … 639
0201h … 027Fh
Receive-PDO 1
Receive
640 + Node-ID
0280h + Node-ID
641 … 767
0281h … 02FFh
Transmit-PDO 2
Send
896 + Node-ID
0380h + Node-ID
897 … 1023
0381h … 03FFh
Transmit-PDO 3
Send
1152 + Node-ID
0480h + Node-ID
1153 … 1279
0481h … 04FFh
Transmit-PDO 4
Send
1408 + Node-ID
0580h + Node-ID
1409 … 1535
0581h … 05FFh
Transmit-SDO
Send
1536 + Node-ID
0600h + Node-ID
1537 … 1663
0601h … 067Fh
Receive-SDO
Receive
1792 + Node-ID
0700h + Node-ID
1793 … 1919
0701h … 077Fh
Node Guarding, Heart‐
beat, Boot-up
Send
2020 07E4h
2020 07E4h
Transmit-LSS
Send
2021 07E5h
2021 07E5h
Receive-LSS
Receive
Example:
The encoder is given the node ID = 5, it then sends emergency messages via the ID
133, Transmit PDOs via the ID 389, 645, 901 as well as 1157 and the Transmit SDO
via the ID 1413.
5.3
Baud rate
The transmission speed on the CANopen bus is defined using the baud rate. Pay
attention to the following criteria:
•
The same baud rate must be set on the AHS/AHM36 CANopen and AHS/AHM36
CANopen Inox as on the master.
•
The higher the baud rate in the CANopen network, the lower the bus load.
•
The longer the cables used, the lower the possible baud rate. Pay attention to
the maximum lenghts of the stubs depending on the baud rate
.
The encoder supports the following baud rates:
INTEGRATION IN CANOPEN
5
8016869/1EF3/2021-12-08 | SICK
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
21
Subject to change without notice