SD710 Series Servo Drive User Manal Chapter 11 Communication
8
250kbit/s
250
125kbit/s
500
50kbit/s
1000
25kbit/s
2500
Table 11-8 CAN communication transmission distance, rate, and node relationship
No.
Transmission
distance
Speed
Node number
Wire diameter
①
25m
1Mbps
64
0.205mm
2
②
95m
500Kbps
64
0.34mm
2
③
560m
100Kbps
64
0.5 mm
2
④
1100m
50Kbps
64
0.75mm
2
11.2.2 Network parameter configuration
11.2.2.1 Communication object identifiers
The Communication Object Identifier (COB-ID) specifies the priority of the object during communication and the
identification of the communication object. the COB-ID corresponds to the 11-bit frame ID in CAN. the 11-bit COB-ID
consists of two parts, divided into the object function code and the 7-bit node address, as shown in Table 11-9.
Table 11-9 Description of COB-ID Composition
10
9
8
7
6
5
4
3
2
1
0
Function Code
Node ID
Each of Canopen's communication objects has a default COB-ID that can be read and partially modified through SDO.
The list of objects is shown in Table 11-10 below.
Table 11-10 Object COB-ID
communication
object
Function Code
Node address
COB-ID
Corresponding object
index
Network
management
0000b
0
0h
-
Synchronized
objects
0001b
0
80h
1005h, 1006h
Emergency
message
0001b
0
to
127
80h+Node_ID
1014h
TPDO1
0011b
0
to
127
180h+Node_ID
1800h
RPDO1
0100b
0
to
127
200h+Node_ID
1400h
TPDO2
0101b
0
to
127
280h+Node_ID
1801h
RPDO2
0110b
0
to
127
300h+Node_ID
1401h
TPDO3
0111b
0
to
127
380h+Node_ID
1802h
RPDO3
1000b
0
to
127
400h+Node_ID
1402h
TPDO4
1001b
0
to
127
480h+Node_ID
1803h
RPDO4
1010b
0
to
127
500h+Node_ID
1403h
T_SDO
1011b
0
to
127
580h+Node_ID
1200h
R_SDO
1100b
0
to
127
600h+Node_ID
1200h
NMT error
1110b
0
to
127
700h+Node_ID
1016h, 1017h
For example,
The COB_ID of R_SDO of slave 2 is 600h+2h=602h