D301087 0308 - BL20 CANopen 3-15
Connections for data cables to BL20-GW-CANOPEN
3
Connections for data cables to BL20-GW-CANOPEN
Fieldbus connection via SUB-D socket
SUB-D connectors are provided for communication with the BL20-
GW-CANOPEN gateway through the CANopen fieldbus.
The passive bus termination must be applied externally if the BL20
gateway is the last station in the bus structure. This external appli-
cation can be implemented either through separate termination
resistors or through a special SUB-D plug which has an integrated
bus termination.
The pin assignments for the plug and socket are identical – the
socket is shown as an example:
Figure 4:
SUB-D socket on
the gateway (top
view)
Table 6:
Pin assignments
for gateway SUB-
D plug/socket
A The shielding
of the fieldbus
is connected
through the
metal housing
of the SUB-D
connector and
the contact
with the moun-
ting rails (see
Page 3-16)
Pin
No.
Designation Meaning
1not used
2 CAN_L inverted data signal (dominant low)
3 CAN_GND ground (optional for CAN data signals)
4not used
5 (CAN_SHLD)
A
6(GND)
7 CAN_H non-inverted data signal (dominant
high)
8not used
9(CAN_V+)
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