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  • PCW
  • PCW's Avatar
Today 19:42
  • PCW
  • PCW's Avatar
Today 19:24 - Today 19:27

7i97T + 7i74 + 7i84U – No Smart Serial Communication

Category: Driver Boards

I would try:

config="sserial_port_0=00000000"

Might also be a DB25 cable issue, not all adapters are wired correctly for this use.
  • Cristy13
  • Cristy13
Today 18:58

7i97T + 7i74 + 7i84U – No Smart Serial Communication

Category: Driver Boards

Hi,I am retrofitting a CNC lathe with LinuxCNC and I have the following Mesa hardware:
  • 1x Mesa 7i97T
  • 1x Mesa 7i74
  • 4x Mesa 7i84U
  • IDC26 to DB25 adapter
  • DB25 male-male 1:1 cable between 7i97T P2 and 7i74
  • standard straight-through CAT5e cables between 7i74 and 7i84U
The problem is that none of the 7i84U boards are detected over Smart Serial.The 7i97T is reachable at:
192.168.1.121
I am using firmware:
7i97t_7i74d.bin
MD5:
4130ebee623115267327c166f8da9d39
I also verified the firmware in flash with:
mesaflash --device 7I97T --addr 192.168.1.121 --verify /home/cnc/7i97t_7i74d.bin
and I get:
Board FLASH memory verified successfully
mesaflash --device 7I97T --addr 192.168.1.121 --sserial
gives only:
SSLBP port 0:
SSLBP Version: 1.43
SSLBP Channels: 8
SSLBP Baud Rate: 2500000
but no 7i84U devices are listed.I tested 7i84U boards on CH1 and CH2 of the 7i74 with the same result.On the 7i84U:
  • W3 = LEFT / operate mode / 2.5 Mbaud
  • VIN = about 28 V
  • VFIELD A = about 28 V
  • VFIELD B = about 28 V
  • CR2 ON
  • CR7 ON
  • CR5 red ON
  • CR6 green OFF / never blinks
On the 7i74:
  • CR1 is ON
  • I initially measured only about 4.5 V
  • I changed it to external regulated 5 V supply
  • now TB1 measures 5.08 V
  • the problem is still exactly the same
I checked the RJ45 cable and it is straight-through:
1-1, 2-2, 3-3, 4-4, 5-5, 6-6, 7-7, 8-8
I also tested the 7i97T P2 interface with W21 UP and P2 disconnected:
mesaflash --device 7I97T --addr 192.168.1.121 --rpo 0x1008
Result:
0001FFFF
So that test appears to pass.
readhmid
 also shows the expected Smart Serial signals:
RXData0/TXData0
 on the 7i97T and 
RXData1...7 / TXData1...7
 for the 7i74 channels.I also tried loading HostMot2 manually:
halrun
loadrt hostmot2
loadrt hm2_eth board_ip=192.168.1.121 config="sserial_port_0=x0xxxxxx"
The 7i97T loads and registers normally, but the 7i84U is still not detected.Everything is new hardware.At this point I suspect either the 7i74 itself, the IDC26/DB25 path between P2 and the 7i74, or something I am missing in the Smart Serial configuration.Does anyone have a known-good 7i97T + 7i74 + 7i84U setup and can tell me what I should test next?In particular:
  • Is 
    sserial_port_0=x0xxxxxx
     correct for a 7i84U connected to CH1 of the 7i74?
  • Is there a direct test for TX/RX on the 7i74 without an oscilloscope?
  • Are there any jumpers/settings on the 7i74 or 7i84U that I may have missed?
Thanks.
  • PCW
  • PCW's Avatar
Today 17:17
Replied by PCW on topic 7i76EU Availibility ?

7i76EU Availibility ?

Category: Driver Boards

Should be this week.
 
  • ihavenofish
  • ihavenofish
Today 16:31
Replied by ihavenofish on topic Mini wannabe datron build

Mini wannabe datron build

Category: CNC Machines

beep boop... 








  • Schaublin12
  • Schaublin12
Today 16:05 - Today 16:11
Replied by Schaublin12 on topic EtherCAT Master Beckhoff slave not found

EtherCAT Master Beckhoff slave not found

Category: Basic Configuration

I have tried lcec configgen xml
Now I have got a new xml file as attached, but LinuxCNC doesn't start.
 
  • tuxcnc
  • tuxcnc
Today 14:42
Replied by tuxcnc on topic Crash

Crash

Category: Plasmac

Typical of Python, the message is absolutely true and absolutely useless...
ValueError: invalid literal for int() with base 10: '' means that you are trying to use an empty string as an int variable, but it doesn't tell you where that empty string came from.
Of course, you can look for the cause for a long time and finally find that, for example, the disk is damaged...
I see that you have a very old Linux with Python 2.7 and instead of repairing this museum, you would be better off installing a new system on new hardware.
It may be easier, and it will definitely be better.
  • Jdog
  • Jdog
Today 12:14
Replied by Jdog on topic Crash

Crash

Category: Plasmac

   
Sorry about that. Ive attached pics here.
  • Marslukan
  • Marslukan
Today 11:12 - Today 11:41
Replied by Marslukan on topic 7i98 and 5abobx3 firmware

7i98 and 5abobx3 firmware

Category: PnCConf Wizard

Спасибо большое. На плату залита прошивка с сайта mesa (7i98_5abobx3d.zip - bit and pin), хотя плата неоригинальная. Приложил файлы с фото платы и распиновкой: old - что сейчас пока установлено, new - как нужно. Свободные пины на P3 буду использовать по концевики,  HOME, Estop и переключатели.
  • my1987toyota
  • my1987toyota's Avatar
Today 10:07
Replied by my1987toyota on topic 7i76EU Availibility ?

7i76EU Availibility ?

Category: Driver Boards

I decided to wait for the next batch of boards to come out. Any estimation when they will be available?
  • tommylight
  • tommylight's Avatar
Today 10:04

LinuxCNC + Mesa 7i92TF: motors barely move and ignore direction changes

Category: Driver Boards

-Use a DVM to check if the ground is properly connected.
-A quick test, make another config with PncConf, but invert all stepgen output pins.
Upload the config files here sop we can have a look, and some pictures of the wiring.
  • tommylight
  • tommylight's Avatar
Today 09:57
Replied by tommylight on topic Crash

Crash

Category: Plasmac

Upload the pictures here, not on plasmaspider.
  • Keith3D
  • Keith3D
Today 06:35
Replied by Keith3D on topic Headless

Headless

Category: General LinuxCNC Questions

I am using direct UDP to the board instead. Thanks for the input!
  • adamster112
  • adamster112
Today 05:54
Replied by adamster112 on topic Remora with STM32H753ZI

Remora with STM32H753ZI

Category: Computers and Hardware

hi ive got this working flawlessly on my scylla btt board took 3 days drop us a message on here if u still looking .
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