E94aycca communication manual (canopen®) – Lenze E94AYCCA User Manual
Page 39
![background image](/manuals/565752/39/background.png)
EDS94AYCCA EN 5.0 - 06/2012
L
39
E94AYCCA communication manual (CANopen®)
Data transfer
Structure of the CAN data telegram
Identifier assignment
The system bus (CANopen) is message-oriented and not node-oriented. Each message has
a unique identification, the identifier. In the case of CANopen, a node-orientation is
achieved by the fact that for each message there is only one sender.
The basic identifiers for network management (NMT) and sync as well as the basic SDO
channel (SDO1) are specified in the CANopen protocol and cannot be changed.
In the Lenze setting, the basic identifiers of the PDOs are preset according to the
"Predefined Connection Set" of DS301, V4.02. They can be changed via parameters/
indexes if required.
Identifiers of the process data objects
Object
Direction
Basic identifier
from the device
to the device
dec
hex
Network management (NMT)
0
0
Sync
128
80
Emergency
z
128
80
PDO1
(Process data channel 1)
TPDO1
z
384
180
RPDO1
z
512
200
PDO2
(Process data channel 2)
TPDO2
z
640
280
RPDO2
z
768
300
PDO3
(Process data channel 3)
TPDO3
z
896
380
RPDO3
z
1024
400
PDO4
(Process data channel 4)
TPDO4
z
1152
480
RPDO4
z
1280
500
SDO1
(Basic SDO channel)
z
1408
580
z
1536
600
SDO2 ... SDO10
(Parameter data channel 2 ... 10)
z
1472
5C0
z
1600
640
Node guarding, heartbeat
z
1792
700