Harness overview

There are two versions of the cable harness: B2 and C1. Please refer to the cable harness marking to know which version i.e B2 or C1 (see the below picture).

Example of cable marking:

1047-141-06 B2
1047-141-06 C1

Example of C1 Cable harness marking

Setup using cable harness version B2

Cable harness version C1

	Function
Designator	Version B2	Version C1
A	Power Supply (12 V)	Power Supply (12 V)
B	CAN1 (can0)	CAN1 (can0)
C	CAN2 (can1)	CAN2 (can1)
D	RS-485	RS-485
E	RS-232	RS-232
F	Reserved for future use	Reserved for future use
G	Reserved for future use	Reserved for future use
H	I/O	I/O
I	Debug USB	Debug USB
J	T1	T1
K	CAN termination	Not available
L	External LTE Antenna	External LTE Antenna
M	External LTE Antenna	External LTE Antenna
N	External GNSS Antenna	External GNSS Antenna
O	External Wi-Fi Antenna	External Wi-Fi Antenna
P	Ethernet	Ethernet
Q	CDP switch power connector	CDP switch power connector
R	Host USB	Host USB
S	Not available	CAN Termination adapter

H connector (I/O) pinout
Pin	Function
Pin 2	AIN1
Pin 3	Ground
Pin 4	AIN3
Pin 5	Ground
Pin 6	DIN1
Pin 7	Ground
Pin 11	DOUT2
Pin 15	AIN2
Pin 16	Ground
Pin 17	AIN4
Pin 18	Ground
Pin 20	Ground
Pin 23	DOUT1

Hardware setup

Connect I and Q to the CDP switch and A to a power supply. Ensure the CDP switch is functioning properly, for example as indicated by green LED status lights.
Turn on the power to the ACU6-Pro device. A new network interface should be present on the PC. To make sure the device stays on, enable ONSW (Power Management):
```
$ ./rundocker.sh utils/onsw.sh on
```
VirtualBox users are advised to add the USB device Linux x.y.z-acu6 ... RNDIS/Ethernet ... to the USB Device Filters list. To get to the add device view, right click on your virtual machine and then click Settings -> USB.
```
$ ip address
...
108: enx001122334455: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether 00:11:22:33:44:55 brd ff:ff:ff:ff:ff:ff
...
$
```
Configure the network interface with the static IP address 198.18.1.2 and netmask 255.255.255.0.

Temporarily this can be done with the following commands, the netmask is here converted into a prefix (255.255.255.0 -> /24):
```
$ sudo ip address add 198.18.1.2/24 dev enx001122334455
$ sudo ip link set enx001122334455 up
```
The above will last until the ACU6 is rebooted.

To make the change persistent, configure the address and netmask in Network Manager.

Identify which Wired connection it is by opening the details using the Cog and checking Hardware Address for the expected MAC (00:11:22:33:44:55).

Configure the checkboxes like this in the Details tab:

Configure the ip address and netmask like this in the IPv4 tab:

Save settings with Apply, switch the interface off if it’s on, then switch it on.

Now the network interface enx001122334455 should have the static IP address 198.18.1.2 and netmask 255.255.255.0.

$ ip address
...
108: enx001122334455: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:11:22:33:44:55 brd ff:ff:ff:ff:ff:ff
    inet 198.18.1.2/24 brd 198.18.1.255 scope global enx001122334455
       valid_lft forever preferred_lft forever
    inet6 fe80::211:22ff:fe33:4455/64 scope link
       valid_lft forever preferred_lft forever
...
$