1LC toolboard not connecting to the 6HC CAN

Q2101

I am installing a 1LC toolboard v1.3 and i cannot get it to talk to the CAN on the 6HC. The Blue VIN LED lights up on the toolboard (it is dim compared to the 6HC's Blue LED) and none of the other LEDs will light up.

I have quadruple checked the wiring to make CAN1_L on the 6HC is wired to CAN_L on the toolboard and CAN1_H is wired to CAN_H, with physical inspections and continuity tests. I pulled the pins on the 1LC side and reversed them, just to make sure, still nothing. Re-spliced the cable connection between the RJ11 and the toolboard. Waited 30 minutes for them to decide if they wanted to connect. Still nothing.

The VIN powering the board is coming from the printers 24V power supply, and the GRD is tied to the ground as it is shown in the drawing. Pulled the board off the extruder to make sure the jumper was soldered.

For giggles, I tested the resistance across pins 1 and 2 on the 1LC side, im only getting 60 Ohms instead of the 120 Ohms shown on the drawing.

Is there something I’m overlooking or can check?

https://docs.duet3d.com/duet_boards/duet_3_can_expansion/duet_3_1lc_v1.0_connection_01.png

dc42

@Q2101 please disconnect everything from the 1LC except power and CAN, then apply power and see if any if any of the other LEDs light up.

60 ohms across the CAN pins is correct if you have enabled the CAN termination on the 1LC and the 6HC is also connected, because the 6HC also has a 120R termination resistor.

Q2101

@dc42 They still do not light up after disconnecting everything. Only the VIN.

Q2101

@Q2101 Furter information, which may or may not be useful. I used the default values for the CAN address of the toolboard that the configuration tool provided, 121. The 6HC is board version 1.02 with firmware v3.5 RC3 running. There is a wifi module with the ESP32S3 chipset running firmware v2.1 B7 attached to the board as well.

The config.g file that the config tool generated is attached. The only change I made was to add the M552 1L S2 command to turn on the AP.

config.g

dc42

@Q2101 where and when did you purchase the tool board?

Q2101

@dc42 Filastruder, late november.

dc42

@Q2101 please email warranty@duet3d.com with a link to this thread. You will receive a response with a link to a form to fill in.