Connector
Connector front
The CANmod.input uses a DB9 (D-sub9) connector for supply and CAN-bus (CAN-P). It uses a mini-USB connector for configuration, streaming, and firmware update.
DB9 connector
Pin # |
DB9 connector |
|---|---|
1 |
Supply (5 V) |
2 |
CAN 1 L |
3 |
GND |
4 |
NC |
5 |
NC |
6 |
GND (optional) |
7 |
CAN 1 H |
8 |
NC |
9 |
Supply (5-24 V) |
Supply
The supplies are internally protected against reverse polarity and low-energy voltage spikes. Refer to the Electrical Specification for more details on the device supply.
The device can be powered through the DB9 connector using one of the below supply lines:
Supply (5-24 V), pin 9
Supply (5 V), pin 1
Warning
The Supply (5 V) pin tolerates 5 V only
Note
The CANmod.input can be directly powered from the CANedge 2nd port 5 V output.
GND
All GND (ground) pins are connected internally.
CAN L/H
The CAN L/H should be connected to the CAN-bus.
Warning
CAN-bus requires no common reference (ground). However, it is recommended that GND (ground) is carried along with CAN-L/H to prevent that the common-mode voltage is exceeded (resulting in transceiver damage)
USB
The USB can be connected to a PC via a mini-USB cable. For more information see USB.
Connector back
Eight input channels can be connected to the CANmod.input using a shared DB25 connector. Each channel is associated with one ground reference. In addition, each channel provides a ~3.3 V excitation signal. The excitation signal can be used to drive passive sensors (such as potentiometers) or to power low power active sensors (such as buffered inductive pickup sensors, optical sensors, etc.).
Warning
The excitation signals are disabled if the shared maximum current is exceeded (see the specification).
The pins of each input channel are grouped as indicated by the dashed lines. Red: Positive excitation signal. Black: Negative reference. Green: Signal. Pin 13 is not connected.
Channel |
Function |
Connector pin |
|---|---|---|
1 |
+ |
24 |
- |
12 |
|
Sig |
25 |
|
2 |
+ |
10 |
- |
23 |
|
Sig |
11 |
|
3 |
+ |
21 |
- |
9 |
|
Sig |
22 |
|
4 |
+ |
7 |
- |
20 |
|
Sig |
8 |
|
5 |
+ |
18 |
- |
6 |
|
Sig |
19 |
|
6 |
+ |
4 |
- |
17 |
|
Sig |
5 |
|
7 |
+ |
15 |
- |
3 |
|
Sig |
16 |
|
8 |
+ |
1 |
- |
14 |
|
Sig |
2 |