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BL20 - Gateway for CANopen
D301087 1211 - BL20 CANopen 4-10
4.5 Connections for data cables to BL20-GW-CANOPEN
4.5.1 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 application 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:
4.5.2 Fieldbus connection through direct wiring
For making connections to the fieldbus you can choose between a SUB-D connection and direct wiring.
Direct wiring of the BL20-GW-CANOPEN to the CANopen fieldbus can be made through the two
terminal blocks with tension spring connectors.
Figure 4-4:
SUB-D socket on
the gateway (top
view)
Table 4-6:
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 4-11
)
Pin No. Designation Meaning
1 not used
2 CAN_L inverted data signal (dominant
low)
3 CAN_GND ground (optional for CAN data
signals)
4 not used
5 (CAN_SHLD)
A
6 (GND)
7 CAN_H non-inverted data signal
(dominant high)
8 not used
9 (CAN_V+)
5 4 3 2 1
9 6 7 8