Hardware Installation

Pinout

The 68 pin main connector has the distribution of input/output channels as follows:

../_images/connector-HEW.LM.368.XLNP_v3.png

Connector HEW.LM.368.XLNP (mounted in CEX)

Warning

Check the pin number before connecting. The colour code is repeated 3 times due to the amount of pins. First section corresponds to pins 1-30, the second section to pins 31-60 and the third one to pins 61-68. Pin number increases following the black line of the pictures above: counterclockwise for the connector and clockwise for the plug.

Main Connector - HEX.LM.368.XLNP

PIN Nº

I/O

Color

Comments

1

Power supply 1

White

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

2

Power supply 2

Brown

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

3

GND

Green

Ground for supply

4

GND

Yellow

Ground for supply

5

CAN (A) P

Gray

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

Twisted pair with a 120 \(\Omega\) Zo recommended

6

CAN (A) N

Pink

7

CAN GND

Blue

Ground for CAN busses

8

CAN (B) P

Red

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

Twisted pair with a 120 \(\Omega\) Zo recommended

9

CAN (B) N

Black

10

OUT RS-485 (P)

Violet

Non-inverted output from RS-485 bus

11

OUT RS-485 (N)

Gray – Pink

Inverted output from RS-485 bus

12

IN RS-485 (N)

Red – Blue

Inverted input to RS-485 bus

13

IN RS-485 (P)

White – Green

Non-inverted input to RS-485 bus

14

RS-485 GND

Brown – Green

Ground for RS-485

15

RS-232 (A) TX

White – Yellow

RS-232 A Output

16

RS-232 (A) RX

Yellow – Brown

RS-232 A Input

17

GND

White – Gray

Ground for digital busses

18

RS-232 (B) TX

Gray – Brown

RS-232 B Output

19

RS-232 (B) RX

White – Pink

RS-232 B Input

20

I2C SCL

Pink – Brown

Clock line for I2C bus

21

I2C SDA

White – Blue

Data line for I2C bus

22

3.3V Output

Brown – Blue

3.3V-100 mA power supply

23

GND

White – Red

Ground for power supply

24

5V Output

Brown – Red

5V – 100 mA power supply

25

GND

White – Black

Ground for power supply

26

ATX (0) P

Brown – Black

ARINC 429 non-inverted output Port 0

27

ATX (0) N

Gray – Green

ARINC 429 inverted output Port 0

28

ARX (0) P

Yellow – Green

ARINC 429 non-inverted input Port 0

29

ARX (0) N

Pink – Green

ARINC 429 inverted input Port 0

30

ECAP 0

Yellow – Pink

Encoder quadrature input

31

ECAP 1

White

Encoder quadrature input

32

ECAP 2

Brown

Encoder quadrature input

33

ECAP 3

Green

Encoder quadrature input

34

PWM 0

Yellow

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

Warning

Each pin withstands a maximum current of 8 mA

35

PWM 1

Gray

36

PWM 2

Pink

37

PWM 3

Blue

38

PWM 4

Red

39

PWM 5

Black

40

PWM 6

Violet

41

PWM 7

Gray – Pink

42

GND

Red – Blue

Ground for digital/analog signals

43

ANALOG (0) 3.3V

White – Green

Analog input 0-3.3 V

44

ANALOG (1) 3.3V

Brown – Green

Analog input 0-3.3 V

45

ANALOG (2) 5V

White – Yellow

Analog input 0-5 V

46

ANALOG (3) 5V

Yellow – Brown

Analog input 0-5 V

47

ANALOG (4) 12V

White – Gray

Analog input 0-12 V

48

ANALOG (5) 12V

Gray – Brown

Analog input 0-12 V

49

ANALOG (6) 36V

White – Pink

Analog input 0-36 V

50

ANALOG (7) 36V

Pink – Brown

Analog input 0-36 V

51

GND

White – Blue

Ground for digital/analog signals

52

ARX (1) P

Brown – Blue

ARINC 429 non-inverted input Port 1

53

ARX (1) N

White – Red

ARINC 429 inverted input Port 1

54

ARX (2) P

Brown – Red

ARINC 429 non-inverted input Port 2

55

ARX (2) N

White – Black

ARINC 429 inverted input Port 2

56

ARX (3) P

Brown – Black

ARINC 429 non-inverted input Port 3

57

ARX (3) N

Gray – Green

ARINC 429 inverted input Port 3

58

ARX (4) P

Yellow – Green

ARINC 429 non-inverted input Port 4

59

ARX (4) N

Pink – Green

ARINC 429 inverted input Port 4

60

GPIO 8

Yellow – Pink

DIGITAL output /DIGITAL input signal (0-3.3V)

Warning

Each pin withstands a maximum current of 1.65 mA

61

GPIO 9

White

62

GPIO 10

Brown

63

GPIO 11

Green

64

GPIO 12

Yellow

65

GPIO 13

Gray

66

GPIO 14

Pink

67

GPIO 15

Blue

68

GPIO 16

Red

CAN Assembly

As described in Warnings section, CEX itself does not allow the connection of multiple CEX or other CAN Bus devices to the same line. It is therefore possible to use a Veronte autopilot for this purpose. Considering Veronte Autopilot includes one entrance resistance of 120 \(\Omega\), a second resistance needs to be placed at the end of the line (again 120 \(\Omega\)). This resistance may be placed on the cable or on another PCB.

../_images/CAN-assembly-2.png

CAN assembly diagram example