Connector Assignments
2.1.1 Shielding General Description
Fig. 3:
Internal connection of the CAN-T-Connector
In the CAN-T-Connector the metal shells of the DSUB connectors are not connected. Thus, the
metal shells are not connected through the CAN-T-Connector, see Figure 3.
2.1.2 Usage in Light Industrial Environment (
Single
Twisted Pair Cable)
In the standard esd CAN cables (
Single
Twisted Pair Cable, 2-wire + Shied) for light industrial
environment applications (see Figure 4), the cable shield (braided shield) is used as signal
CAN_GND, but this signal is not connected to the metal shell of the DSUB9 connectors.
Instead, the CAN_GND signal is connected to Pin 3. Therefore the CAN-T-Connector is compatible
with the standard esd CAN cables.
Fig. 4:
Internal connection of the CAN-T-Connector using single twisted pair cable
CAN-T-Connector
Manual • Doc. No.: C.1311.21 / Rev. 1.3
Page 9 of 22
CAN_H
CAN_GND
CAN_L
C
A
N
_H
C
A
N
_G
N
D
C
A
N
_L
Braided Shield
Metal Shell
Braided Shield
Metal Shell
Braided Shield
Metal Shell
n.c.
n.c.
n.c.
n.c. ... not connected
.
.
.
1 2 3
9
...
.
.
.
1
2
3
.
.
.
9
1
2
3
.
.
.
9
Metal Shell
Metal Shell
Metal Shell
n.c. ... not connected
n.c.
n.c.
n.c.
