Hardware Installation

Version

Fixation

MEX

2x M3 screws

MEX OEM

4x M2 screws (2 of them must not be ferrous)

Pinout

Pins are arranged as follows:

../_images/Pins.png

PIN Nº

I/O

Comments

1

Power supply 1

Power supply for the main system, redundant with Power supply 2

2

GND

Ground for supply

3

Power supply 2

Power supply for the main system, redundant with Power supply 1

4

GND

Ground for supply

5

SCL

I2C CLOCK

6

SDA

I2C DATA

7

ANALOG (1) 5V

Analog input 0-5 V

8

ANALOG (2) 5V

9

ANALOG (3) 12V

Analog input 0-12 V

10

ANALOG (4) 36V

Analog input 0-36 V

11

GND

Ground for supply

12

ECAP 1

ECAP, EQEP or GPIO (only as input)

13

ECAP 2

14

GND

Ground for supply

15

RS-232 (A) TX

RS-232 A Output

16

RS-232 (A) RX

RS-232 A Input

17

GND

Ground for supply

18

RS-232 (B) TX

RS-232 B Output

19

RS-232 (B) RX

RS-232 B Input

20

CAN B (P)

CAN bus interface. It supports data rates up to 1 Mbps

21

CAN B (N)

22

CAN A (P)

23

CAN A (N)

24

CAN GND

Isolated ground for CAN bus

25

PWM 1

PWM/DIGITAL output /DIGITAL input signal (0-5V)

26

PWM 2

27

PWM 3

28

PWM 4

29

GND

Ground for supply

30

OUT RS-485 (P)

Non-inverted output from RS-485 bus

31

IN RS-485 (N)

Inverted input to RS-485 bus

32

OUT RS-485 (N)

Inverted output from RS-485 bus

33

IN RS-485 (P)

Non-inverted input to RS-485 bus

34

RS-485 GND

Ground for RS-485

Warning

Each CAN bus is equipped with a 120 Ohm (+/-5%) termination resistor that can be activated and deactivated by SW.

Warning

RS-485 has internal termination resistor with 120 ohms (+/-5%).

Warning

I2C is equiped with internal pull-up resistors.

Note

Pins 1 and 2 are not common.

Electrical diagram of CAN bus

Veronte MEX requires termination resistance in order to allow the connection of multiple Veronte MEX or other CAN Bus devices to the same line. Considering Veronte Autopilot includes one entrance resistance of 120 Ω, a second resistance needs to be placed at the end of the line (again 120 Ω). This resistance may be placed on the cable or on another PCB.

../_images/ResOpen.png

CAN assembly diagram example

Veronte MEX has an internal resistor of 120 Ω, which can be activated by SW. Then, another way to connect multiple CAN Bus devices lies in connecting a MEX to the end of cables, then activating its internal CAN resistor.

../_images/ResClosed.png

Diagram with CAN resistor activated