X20 system modules • Bus controllers • X20BC0143-10
X20 system User's Manual 3.10
565
4.5.12.6 CAN bus interface
The CAN bus interface is a 9-pin DSUB plug.
Interface
Pin
CAN
1
Reserved
2
CAN_L
CAN low
3
CAN_GND
CAN ground
4
Reserved
5
Reserved
6
Reserved
7
CAN_H
CAN high
8
Reserved
5
1
9
6
9
Reserved
Table 171: CAN bus interface - Pinout
4.5.12.7 Node number and transfer rate
Node numbers and transfer rates are configured using the two bus controller number switches.
The transfer rate can be specified in two ways:
•
Automatic detection by bus controller (see 4.5.12.8 "Automatic transfer rate detection" on page 566)
•
Fixed definition by user (see 4.5.12.9 "Setting the transfer rate" on page 566)
Switch position
Node number
Transfer rate
0x00
Not allowed
-
0x01 - 0x7F
1 - 127
Automatically set by the bus controller (default) or fixed setting
by the user
0x80 - 0x88
-
Sets a fixed transfer rate
0x89
-
Sets automatic transfer rate detection
0x8A - 0x8F
Not allowed
-
0x90
Clearing the parameters
See section 4.5.12.11 "Deleting parameters" on page 568
-
0x91
Not allowed
-
0x92
Save configuration
See section 4.5.12.10 "Save auto-
matic configuration" on page 567
-
0x93 - 0xFF
Not allowed
-
Table 172: Node numbers and transfer rate
Summary of Contents for X20 System
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