Connector

Connector front

The CANmod.input uses a DB9 (D-sub9) connector for supply and CAN-bus. It uses a mini-USB connector for configuration 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

If the module is used with a CANedge device, it can be directly powered using the Supply (5 V) pin (requires that the 5V output is enabled in the CANedge configuration).

Warning

The Supply (5 V) pin tolerates 5 V only

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. This allows access to the device configuration etc. For more information, refer to the USB Section.

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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.

Connector pinout. “+”: Positive excitation signal. “-”: Negative reference. “Sig”: 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