Technical data • Individual components
128
Panel PC 2100 swing arm user's manual V1.12
3.4.8.3.1 CAN bus interface - Pinout
The CAN bus interface on the system unit is referred to as IFx.
CAN bus - IFx
1)2)
The electrically isolated CAN bus interface is a 10-pin female connector.
Transfer rate
Max. 1 Mbit/s
Bus length
Max. 1000 m
Pin
Assignment
1
-
2
CAN shield
3
-
4
-
5
CAN H
6
CAN L
7
CAN GND
8
-
9
-
10
-
10-pin, male
1 3 5 7
2 4 6 8 10
9
Table 154: 5ACCIF01.ICAN-000 - CAN bus interface
1)
The interfaces, etc. available on the device or module have been numbered as such for easy identification. This numbering may differ from that used by
the particular operating system.
2)
This interface (if available) is enabled automatically in BIOS as CAN with default I/O address 384h/385h and IRQ 10.
I/O address and IRQ
Resource
Default setting
Function
384h (address register)
Defines the register number to access
I/O address
385h (data register)
Access to the register defined in the address register
IRQ
IRQ10
Interrupt
Table 155: I/O address and IRQ
CAN driver settings
The baud rate can be set in Automation Studio either with predefined values or with the bit timing register. For
additional information, see Automation Help.
Bit timing register 1
Bit timing register 0
Baud rate
00h
14h
1000 kbit/s
80h or 00h
1Ch
500 kbit/s
81h or 01h
1Ch
250 kbit/s
83h or 03h
1Ch
125 kbit/s
84h or 04h
1Ch
100 kbit/s
89h or 09h
1Ch
50 kbit/s
Table 156: CAN driver settings
CAN - Bus length and cable type
The type of cable to be used depends largely on the required bus length and number of nodes. The bus length is
determined by the bit rate. In accordance with CiA (CAN in Automation), the maximum bus length is 1000 meters.
The following bus lengths are permitted with a maximum oscillator tolerance of 0.121%:
Extension
Transfer rate
≤1000 m
Typ. 50 kbit/s
≤200 m
Typ. 250 kbit/s
≤100 m
Typ. 500 kbit/s
≤20 m
Typ. 1 Mbit/s
Table 157: CAN - Bus length and transfer rate
