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Search Results (Searched for: 7i76e)

Todd Zuercher

24 Feb 2026 16:26

Replied by Todd Zuercher on topic 7i76EU+7i85+7i84U

7i76EU+7i85+7i84U

Category: Driver Boards

Yes, the field power is connected.

I have this for the config line in hal

loadrt hm2_eth board_ip="10.10.10.10" config="num_encoders=5 num_pwmgens=0 num_stepgens=5 sserial_port_0=0000000x"

Here's the output from mesaflash;

twincnc@twincnc:~$ mesaflash --device 7i76eu --addr 10.10.10.10 --dbname2 7i85 --readhmid
Configuration Name: HOSTMOT2

General configuration information:

BoardName : MESA7I76
FPGA Size: 20 KGates
FPGA Pins: 256
Number of IO Ports: 3
Width of one I/O port: 17
Clock Low frequency: 100.0000 MHz
Clock High frequency: 160.0000 MHz
IDROM Type: 3
Instance Stride 0: 4
Instance Stride 1: 64
Register Stride 0: 256
Register Stride 1: 256

Modules in configuration:

Module: DPLL
There are 1 of DPLL in configuration
Version: 0
Registers: 7
BaseAddress: 7000
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: WatchDog
There are 1 of WatchDog in configuration
Version: 0
Registers: 3
BaseAddress: 0C00
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: IOPort
There are 3 of IOPort in configuration
Version: 0
Registers: 5
BaseAddress: 1000
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: StepGen
There are 5 of StepGen in configuration
Version: 2
Registers: 10
BaseAddress: 2000
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: MuxedQCount
There are 6 of MuxedQCount in configuration
Version: 4
Registers: 5
BaseAddress: 3600
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: MuxedQCountSel
There are 1 of MuxedQCountSel in configuration
Version: 0
Registers: 0
BaseAddress: 0000
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: SSerial
There are 1 of SSerial in configuration
Version: 0
Registers: 6
BaseAddress: 5B00
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 64 bytes

Module: LED
There are 1 of LED in configuration
Version: 0
Registers: 1
BaseAddress: 0200
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Configuration pin-out:

IO Connections for on-card -> 7I76
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir

TB2-4,5 0 IOPort StepGen 0 Dir/Table2 (Out)
TB2-2,3 1 IOPort StepGen 0 Step/Table1 (Out)
TB2-10,11 2 IOPort StepGen 1 Dir/Table2 (Out)
TB2-8,9 3 IOPort StepGen 1 Step/Table1 (Out)
TB2-16,17 4 IOPort StepGen 2 Dir/Table2 (Out)
TB2-14,15 5 IOPort StepGen 2 Step/Table1 (Out)
TB2-22,23 6 IOPort StepGen 3 Dir/Table2 (Out)
TB2-20,21 7 IOPort StepGen 3 Step/Table1 (Out)
TB3-4,5 8 IOPort StepGen 4 Dir/Table2 (Out)
TB3-2,3 9 IOPort StepGen 4 Step/Table1 (Out)
Internal-Field-IO 10 IOPort SSerial 0 TXData0 (Out)
Internal-Field-IO 11 IOPort SSerial 0 RXData0 (In)
TB3-18,19 12 IOPort SSerial 0 TXData1 (Out)
TB3-16,17 13 IOPort SSerial 0 RXData1 (In)
TB3-13,14 14 IOPort MuxedQCount 2 MuxQ-IDX (In)
TB3-10,11 15 IOPort MuxedQCount 2 MuxQ-B (In)
TB3-7,8 16 IOPort MuxedQCount 2 MuxQ-A (In)

IO Connections for P1 -> 7I85
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir

TB1-19,20 17 IOPort SSerial 0 RXData6 (In)
TB1-21,22 18 IOPort SSerial 0 TXData6 (Out)
TB1-11,12 19 IOPort SSerial 0 RXData5 (In)
TB1-13,14 20 IOPort SSerial 0 TXData5 (Out)
TB1-3,4 21 IOPort SSerial 0 RXData4 (In)
TB1-5,6 22 IOPort SSerial 0 TXData4 (Out)
TB2-19,20 23 IOPort SSerial 0 RXData3 (In)
TB2-21,22 24 IOPort SSerial 0 TXData3 (Out)
TB2-11,12 25 IOPort SSerial 0 RXData2 (In)
TB2-13,14 26 IOPort SSerial 0 TXData2 (Out)
Internal-EncMux 27 IOPort MuxedQCountSel 0 MuxSel0 (Out)
TB3-1,2,9,10 28 IOPort MuxedQCount 0 MuxQ-A (In)
TB3-4,5,12,13 29 IOPort MuxedQCount 0 MuxQ-B (In)
TB3-7,8,12,13 30 IOPort MuxedQCount 0 MuxQ-IDX (In)
TB3-17,18,TB2-1,2 31 IOPort MuxedQCount 1 MuxQ-A (In)
TB3-20,21,TB2-4,5 32 IOPort MuxedQCount 1 MuxQ-B (In)
TB3-23,24,TB2-7,8 33 IOPort MuxedQCount 1 MuxQ-IDX (In)

IO Connections for P2
DB25 pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir

1 34 IOPort None
14 35 IOPort None
2 36 IOPort None
15 37 IOPort None
3 38 IOPort None
16 39 IOPort None
4 40 IOPort None
17 41 IOPort None
5 42 IOPort None
6 43 IOPort None
7 44 IOPort None
8 45 IOPort None
9 46 IOPort None
10 47 IOPort None
11 48 IOPort None
12 49 IOPort None
13 50 IOPort None

twincnc@twincnc:~$

PCW

24 Feb 2026 16:11 - 24 Feb 2026 16:17

Replied by PCW on topic 7i76EU+7i85+7i84U

Is sserial channel 2 enabled in the hal file?

(something like : "sserial_port_0=000xxxxx" in the driver command line)

Also

mesaflash --device 7i76eu --addr 10.10.10.10 --dbname2 7i85 --readhmid

would list the 7I85 pins, not DB25 pins

tommylight

24 Feb 2026 16:09

Replied by tommylight on topic 7i76EU+7i85+7i84U

7i76EU+7i85+7i84U

Category: Driver Boards

7i84 requires having field power on both section for all IO to show up, not sure about the 7i84U.
Is the field power applied to the 7i84U?

Todd Zuercher

24 Feb 2026 16:02

7i76EU+7i85+7i84U was created by Todd Zuercher

7i76EU+7i85+7i84U

Category: Driver Boards

First time using a Mesa Ethernet board and I'm trying to set up a new install. I think I've flashed the right firmware to the 7i76eu. But I can't seem to see the 7i84u card that I have plugged into the first serial connector on the 7i85. The encoders seem to be working on the 7i85, but I can't seem to make the 7i84u work. On the 7i85u CR2 and CR7 are on yellow and CR5 is on red. Not sure what I'm doing/have done wrong.

Here's the output of mesaflash --device 7i76eu --addr 10.10.10.10 --readhmid

twincnc@twincnc:~$ mesaflash --device 7i76eu  --addr 10.10.10.10  --readhmid
Configuration Name: HOSTMOT2

General configuration information:

  BoardName : MESA7I76
  FPGA Size: 20 KGates
  FPGA Pins: 256
  Number of IO Ports: 3
  Width of one I/O port: 17
  Clock Low frequency: 100.0000 MHz
  Clock High frequency: 160.0000 MHz
  IDROM Type: 3
  Instance Stride 0: 4
  Instance Stride 1: 64
  Register Stride 0: 256
  Register Stride 1: 256

Modules in configuration:

  Module: DPLL
  There are 1 of DPLL in configuration
  Version: 0
  Registers: 7
  BaseAddress: 7000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: WatchDog
  There are 1 of WatchDog in configuration
  Version: 0
  Registers: 3
  BaseAddress: 0C00
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: IOPort
  There are 3 of IOPort in configuration
  Version: 0
  Registers: 5
  BaseAddress: 1000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: StepGen
  There are 5 of StepGen in configuration
  Version: 2
  Registers: 10
  BaseAddress: 2000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: MuxedQCount
  There are 6 of MuxedQCount in configuration
  Version: 4
  Registers: 5
  BaseAddress: 3600
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: MuxedQCountSel
  There are 1 of MuxedQCountSel in configuration
  Version: 0
  Registers: 0
  BaseAddress: 0000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: SSerial
  There are 1 of SSerial in configuration
  Version: 0
  Registers: 6
  BaseAddress: 5B00
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 64 bytes

  Module: LED
  There are 1 of LED in configuration
  Version: 0
  Registers: 1
  BaseAddress: 0200
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

Configuration pin-out:

IO Connections for on-card -> 7I76
Pin#                  I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

TB2-4,5                 0   IOPort       StepGen          0        Dir/Table2      (Out)
TB2-2,3                 1   IOPort       StepGen          0        Step/Table1     (Out)
TB2-10,11               2   IOPort       StepGen          1        Dir/Table2      (Out)
TB2-8,9                 3   IOPort       StepGen          1        Step/Table1     (Out)
TB2-16,17               4   IOPort       StepGen          2        Dir/Table2      (Out)
TB2-14,15               5   IOPort       StepGen          2        Step/Table1     (Out)
TB2-22,23               6   IOPort       StepGen          3        Dir/Table2      (Out)
TB2-20,21               7   IOPort       StepGen          3        Step/Table1     (Out)
TB3-4,5                 8   IOPort       StepGen          4        Dir/Table2      (Out)
TB3-2,3                 9   IOPort       StepGen          4        Step/Table1     (Out)
Internal-Field-IO      10   IOPort       SSerial          0        TXData0         (Out)
Internal-Field-IO      11   IOPort       SSerial          0        RXData0         (In)
TB3-18,19              12   IOPort       SSerial          0        TXData1         (Out)
TB3-16,17              13   IOPort       SSerial          0        RXData1         (In)
TB3-13,14              14   IOPort       MuxedQCount      2        MuxQ-IDX        (In)
TB3-10,11              15   IOPort       MuxedQCount      2        MuxQ-B          (In)
TB3-7,8                16   IOPort       MuxedQCount      2        MuxQ-A          (In)

IO Connections for P1
DB25 pin#             I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                     17   IOPort       SSerial          0        RXData6         (In)
14                     18   IOPort       SSerial          0        TXData6         (Out)
 2                     19   IOPort       SSerial          0        RXData5         (In)
15                     20   IOPort       SSerial          0        TXData5         (Out)
 3                     21   IOPort       SSerial          0        RXData4         (In)
16                     22   IOPort       SSerial          0        TXData4         (Out)
 4                     23   IOPort       SSerial          0        RXData3         (In)
17                     24   IOPort       SSerial          0        TXData3         (Out)
 5                     25   IOPort       SSerial          0        RXData2         (In)
 6                     26   IOPort       SSerial          0        TXData2         (Out)
 7                     27   IOPort       MuxedQCountSel   0        MuxSel0         (Out)
 8                     28   IOPort       MuxedQCount      0        MuxQ-A          (In)
 9                     29   IOPort       MuxedQCount      0        MuxQ-B          (In)
10                     30   IOPort       MuxedQCount      0        MuxQ-IDX        (In)
11                     31   IOPort       MuxedQCount      1        MuxQ-A          (In)
12                     32   IOPort       MuxedQCount      1        MuxQ-B          (In)
13                     33   IOPort       MuxedQCount      1        MuxQ-IDX        (In)

IO Connections for P2
DB25 pin#             I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                     34   IOPort       None           
14                     35   IOPort       None           
 2                     36   IOPort       None           
15                     37   IOPort       None           
 3                     38   IOPort       None           
16                     39   IOPort       None           
 4                     40   IOPort       None           
17                     41   IOPort       None           
 5                     42   IOPort       None           
 6                     43   IOPort       None           
 7                     44   IOPort       None           
 8                     45   IOPort       None           
 9                     46   IOPort       None           
10                     47   IOPort       None           
11                     48   IOPort       None           
12                     49   IOPort       None           
13                     50   IOPort       None

Stormbird
Stormbird

23 Feb 2026 13:49

Replied by Stormbird on topic looking for Mesa 7I76E card

looking for Mesa 7I76E card

Category: User Exchange

I have one unused, never connected, bought from Mesa in California in 2017, been sitting in a drawer in my desk ever since. Oxford, UK for £150 please

Christian
Christian

21 Feb 2026 12:20

Replied by Christian on topic Mesa 7i76EU - how to enable mode 2?

Mesa 7i76EU - how to enable mode 2?

Category: Computers and Hardware

Hello everyone,
First of all, thanks to PCW for pointing out that `sserial_port_0=20000000` in the driver config **should enable Mode 2**:

> In the driver config string will set the mode to 2 which will enable both the MPG encoder inputs and analog inputs.
> Note that the encoder inputs are intended for MPG use and are fairly slow and do not support index.
> You would normally use the 7I76EU high speed encoder input for the spindle (TB3 pins 7..15).

I have a **brand new Mesa 7I76EU** for my Maho MH400 mill and I want to use **Mode 2**:
- Inputs 16–19 for an **MPG handwheel (ABZ encoder)**
- Inputs 00–03 as **analog inputs** for feedrate and spindle override

**What I have tried so far:**
- In the `.ini` under `[HOSTMOT2]` I set:

[HOSTMOT2]
DRIVER=hm2_eth
BOARD=7i76eu
CONFIG="num_encoders=1 num_pwmgens=0 num_stepgens=5 sserial_port_0=20000000"

- In the HAL, the card is loaded like this:

loadrt hm2_eth board_ip="192.168.1.121" config="num_encoders=1 num_pwmgens=0 num_stepgens=5 sserial_port_0=20000000"
setp [HMOT](CARD0).watchdog.timeout_ns 5000000

- LinuxCNC detects the card correctly:

hm2_eth: discovered 7I76EU
hm2/hm2_7i76e.0: Smart Serial Firmware Version 43
Board hm2_7i76e.0.7i76.0.0 Hardware Mode 0 = standard
Board hm2_7i76e.0.7i76.0.0 Software Mode 0 = io_spin
Board hm2_7i76e.0.7i76.0.0 Software Mode 1 = io_ana_spin
Board hm2_7i76e.0.7i76.0.0 Software Mode 2 = io_enc_ana_spin_fv

**Problem / Open Questions:**
- Despite this configuration, the card **does not automatically operate in Mode 2**.
- I want to use the analog inputs and the MPG handwheel simultaneously, and monitor the spindle with an ABZ encoder, but the Mode 2 functionality does not seem active yet.
- Is it possible that the mode must be **physically set via jumpers**, or is there another driver/firmware parameter I am missing?
- Attempts to flash a Bitfile did **not work**.

Any advice on how to reliably activate Mode 2 without LinuxCNC entering a fault state would be greatly appreciated.

Thanks in advance!
Christian

DerKlotz
DerKlotz

21 Feb 2026 12:09 - 21 Feb 2026 12:51

Replied by DerKlotz on topic Add Buttons in Probe Basic

Add Buttons in Probe Basic

Category: QtPyVCP

You mean that led at the attached photo? I can´t find a probe section in QT Designer or do i need to be in Probe Basic Development modus instaed of stable?

And can you help me here ->
However, I don't know how to link the light switch to the output of my Mesa 7i76e. I tried to implement "net light => hm2_7i76e.0.7i76e.0.0.output-02 <= qtpyvcp.light" in my postgui_hal. Unfortunately, that didn't work.

DerKlotz
DerKlotz

20 Feb 2026 11:45 - 20 Feb 2026 14:41

Replied by DerKlotz on topic Add Buttons in Probe Basic

Add Buttons in Probe Basic

Category: QtPyVCP

Hello,I've been working on this for the last few days and now understand how to add switches graphically under user_buttons/template_main/template_main.ui (see attached photo).However, I don't know how to link the light switch to the output of my Mesa 7i76e, for example. I tried to implement net light => hm2_7i76e.0.7i76e.0.0.output-02 <= qtpyvcp.light in my postgui_hal. Unfortunately, that didn't work. What am I overlooking as a newbie?
And in addition i´d like to have a nice looking Led right to the button. Red = off, green = on. I could not find one in QT Designer. Alternatively, the button itself could change from red to green.

Translated with DeepL.com (free version)

summat
summat

19 Feb 2026 16:49

Replied by summat on topic Mini PC for LinuxCNC/CPU Realtime Performance

Mini PC for LinuxCNC/CPU Realtime Performance

Category: Computers and Hardware

I'll hijack this thread, as my use-case is a "mini PC" NUC gen-11 i3, modest performance but which should more than adequate for LinuxCNC. Running 2.9.0 (though able to update... however same behaviour verified with another user here with standard desktop and 2.9.8).

With a Mesa 7i76e (other user: 7i92) - just observing HAL pins, whilst rebuilding an old Boxford 160 set-up I noticed that the HAL Write.Time pin was bubbling around 10,000-12,000 (so, 10us-12us) - which looked quite respectable given that the HM2 is scheduled on servo thread at 1ms. The hm2.read, however, was around 800,000-900,000 (verified on other user's 7i92 also), That, to my uneducated mind is getting a bit close to the limits of the 1ms servo thread. Do other people see similar performance / behaviour with Mesa cards?

I'll dig deeper and Wireshark the set-up. I should say that my particular environment the NUC wired interface is hooked to the Mesa, and I use WiFi for internet. Other user is dedicated wired interface to the machine without internet.

DerKlotz
DerKlotz

16 Feb 2026 14:10

Add Buttons in Probe Basic was created by DerKlotz

Add Buttons in Probe Basic

Category: QtPyVCP

Hello,
i need some buttons in Probe basic which activates outputs from my Mesa 7i76e. The attached photo show what i need.
I found /user_buttons/template_user_buttons/template_user_buttons.ui (attached). Would that a nice place add the buttons. But so far i don´t know how to start the ui ind Probe Basic GUI.

Best regards

PCW

15 Feb 2026 03:06

Replied by PCW on topic Mesa 7I76EU – Fixing „Unsupported ethernet device – No 7I76EU board found” Error

Mesa 7I76EU – Fixing „Unsupported ethernet device – No 7I76EU board found” Error

Category: Driver Boards

The 7I76EU is compatible with 7I76E hal/ini files, so you can
just select "7I76E" in pncconf.

Pupy1993
Pupy1993

15 Feb 2026 02:13

Replied by Pupy1993 on topic Mesa 7I76EU – Fixing „Unsupported ethernet device – No 7I76EU board found” Error

Mesa 7I76EU – Fixing „Unsupported ethernet device – No 7I76EU board found” Error

Category: Driver Boards

Hello.
I'm new in this form. I couldn't config my Mesa Card 7i76EU, the PncConf doesn't show the 7i76eu. I'm using Linux CNC 2.9.8. Thanks in advance.

PCW

14 Feb 2026 20:07

Replied by PCW on topic Mesa 7i76EU - how to enable mode 2?

Mesa 7i76EU - how to enable mode 2?

Category: Computers and Hardware

sserial_port_0=20000000

In the driver config string will set the mode to 2 which will enable both
the MPG encoder inputs and analog inputs.

Note that the encoder inputs are intended for MPG use and

1. Are fairly slow
2. Do not support index

You would normally use the 7I76EU high speed encoder input for the
spindle (TB3 pins 7..15)

Christian
Christian

14 Feb 2026 09:37

Mesa 7i76EU - how to enable mode 2? was created by Christian

Mesa 7i76EU - how to enable mode 2?

Category: Computers and Hardware

Hello everyone,I’m looking for some help with my MESA 7i76EU configuration.I would like to use Mode 2. According to the manual, in this mode inputs 16–19 can be used for the encoder signals of an MPG handwheel, and inputs 00–03 are converted into analog inputs. I would like to connect potentiometers to these analog inputs to override the feed rate and spindle speed.At the same time, I would like to use the encoder interface of the MESA with an ABZ encoder to monitor the spindle speed. As far as I understand, the 7i76EU is designed for exactly this purpose.My question:
How do I switch the MESA to Mode 2?So far I have tried setting the parameter

sserial_port_0=20000000

in the .hal file.
I also tried flashing a new bitfile that should change the mode, but that didn’t work either.Maybe it’s much simpler and the MESA detects analog signals automatically?
Or does the mode have to be changed via jumpers?At the moment I’m a bit stuck with my research (manual, internet, and AI didn’t get me any further), so I would really appreciate any advice or hints.Thanks a lot!

tommylight

07 Feb 2026 17:54

Replied by tommylight on topic Maho mh800w retrofit

Maho mh800w retrofit

Category: Milling Machines

djdock99 wrote:
.... i can manually latch relay 19k1 by holding on the contactor with a screw driver.

Never smart to do that to machines.

djdock99 wrote:
.... but the x and z servos are rotating slowly but smoothly.

This means that LinuxCNC has no control over the servo drives, usually incorrect or missing wiring, like are the encoders wired to Mesa and do they work correctly counting up/down on the LinuxCNC DRO ?

djdock99 wrote:
Then when i update the hal file to electronically latch 19k1 with f2 it will not hold and drops relays straight away.

What error does LinuxCNC show when that happens?
I would bet it shows "joint.n.following-error" as noted on my second reply.
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You are working on a complicated machine, so it is imperative to follow instructions strictly and as listed in priority.
See this for wiring and testing:
forum.linuxcnc.org/10-advanced-configura...to-example-mesa-7i77
And for network and WiFi to work at the same time, see here
forum.linuxcnc.org/27-driver-boards/3559...ethernet-mesa-boards

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