10
MOVIDRIVE
®
DFC11A CAN Bus
2
Assembly / Installation
Instructions
2.6
DIP Switch Settings
After the DFC11A option pcb has been installed, the DIP switches on the pcb must be set. The DIP
switch settings can be changed when the option pcb is installed. The functions of the various DIP
switches are shown in the table below.
Table 1: DIP switch settings
The DIP switches of the S1 switch block (see Figure 6) serve to set the process data length (identi-
fied by 'L') and the baud rate (identified by 'B').
The DIP switches of the S2 switch block are used to set the basic ID and to connect the terminating
resistor. The basic ID comprises 6 DIP switches. These are followed by a reserved DIP switch,
which is to be set at OFF. The bottom switch of the block connects the 120
Ω
terminating resistor
for the bus cable. This terminating resistor is required for the first and the last inverter on the bus
line to avoid reflections.
The CAN option pcb must be re-initialized each time a DIP switch setting is changed. To do
this, switch the supply off and then on again.
Dip switch
block
Designation
Bit
Function
Setting
As-delivered settings are
underlined
S1
L
1-0
Process data length
: Not defined
: 1 process data word
: 2 process data words
: 3 process data words
S1
B
3-2
Baud rate
: 125 kbaud
: 250 kbaud
: 500 kbaud
: 1 Mbaud
S2
ID
5-0
Identifier
Here, e. g. ID = 6
0 ... 63
S2
nc
6
Reserved
: Switch setting at OFF
S2
R
7
Terminating resistor
for the CAN bus
cable
: None
: 120
Ω
L
0
O F F
O N
L
0
O F F
O N
L
0
O F F
O N
L
0
O F F
O N
B
3
O F F
O N
B
3
O F F
O N
B
3
O F F
O N
B
3
O F F
O N
ID
0
O F F
O N
nc
O F F
O N
R
7
O F F
O N
R
7
O F F
O N
