ifm
System Manual
ecomat
mobile
PDM360NG (CR1080, CR1081, CR9042) Target V01
2011-07-28
Annex
CANopen tables
421
13.4 CANopen
tables
IDs (addresses) in CANopen .................................................................................................... 421
Structure of CANopen messages.............................................................................................. 422
Bootup messsage...................................................................................................................... 426
Network management (NMT).................................................................................................... 427
CANopen error code ................................................................................................................. 431
9941
The following tables will inform you about important values and settings of the CANopen interfaces.
13.4.1
IDs (addresses) in CANopen
3952
In CANopen there are different types of addresses (IDs):
COB
ID
The
C
ommunication
Ob
ject
Id
entifier addresses the message (= the communication object) in the
list of devices. A communication object consists of one or more CAN messages with a specific
functionality, e.g.
- PDO (
P
rocess
D
ata
O
bject = message object with process data),
- SDO (
S
ervice
D
ata
O
bject.= message object with service data),
- emergency (message object with emergency data),
- time (message object with time data) or
- error control (message object with error messages).
CAN
ID
The
CAN Id
entifier defines CAN messages in the complete network. The CAN ID is the main part
of the arbitration field of a CAN data frame. The CAN ID value determines implicity the priority for
the bus arbitration.
Download
ID
The download ID indicates the node ID for service communication via SDO for the program
download and for debugging.
Node
ID
The
Node Id
entifier is a unique descriptor for CANopen devices in the CAN network. The Node ID
is also part of some pre-defined connectionsets (
Function code
(
→
page
Comparison of download-ID vs. COB-ID:
Controller program download
CANopen
Download ID
COB ID SDO
Node ID
COB ID SDO
TX: 580
16
+ download ID
TX: 580
16
+ node ID
1…127
RX: 600
16
+ download ID
1…127
RX: 600
16
+ node ID
TX = slave sends to master
RX = slave receives from master