Description of CANopen-Interface
HYDAC ELECTRONIC GMBH
07.10.2010
Mat. No. 669824
Page 26 of 63
4.7.2 Transmission of LSS services
By means of LSS services, the LSS master requests services to be performed by the
LSS slave. Communication between LSS master and LSS slave is made by means of
implemented LSS protocols.
Similar as in the case of SDO transmitting, also here two COB-IDs for sending and
receiving are used:
COB-ID
Meaning
0x7E4
LSS-Slave
LSS-Master
0x7E5
LSS-Master
LSS-Slave
Table 6: COB-IDs for LSS services
4.7.2.1 LSS message format
The data field with max. 8 byte length of a CAN message is used by a LSS service as
follows:
CS
Data
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Table 7: LSS message
Byte 0 contains the
Command-Specifier
(CS), afterwards 7 byte data are following.
4.7.3 Switch mode protocols
4.7.3.1 Switch mode global protocol
The given protocol has implemented the
Switch mode global service
and controls
the state behavior of the LSS slave. By means of the LSS master all LSS slaves in the
network can be switched into
Waiting Mode
or
Configuration Mode
.
LSS-Master --> LSS-Slave
0
1
2
3
4
5
6
7
COB-ID CS
Mode
Reserved by CiA
0x7E5 04
0 = Waiting mode
1 = Configuration mode