6i25 and 7i77 config

Hello LinuxCNC experts!

I am having a hard time setting up my LinuxCNC configuration. I have a 6i25 and 7i77. I have confirmed 5V to the P1 connector and jumper is in right hand. I have 26V on TB2. All others connector i have removed from the 7i77.

I have installed: linuxcnc_2.9.4 amd64.hybrid iso file. My Jitter is good.
I did not buy the 6i25 and 7i77 as a kit. i tried to load the firmware this way;

sudo mesaflash --device 5i25 --write (my directory)/5i25_7i77x2.bit
sudo mesaflash --device 5i25 --reload
 
i used the files from mesa website. And it seems to flash without problems.

Than i tried to use pnconf. i setup the encoders XYZ and PWM XYZ and the correct scaling.
When i load the program my pc just reboots. I get no errors. I tried to alot of things from these forums but i cant get any sucess.

Best regards Christian

Hi Tommy!
The PC only has 1 PCIE X16 so that is problematic
I can see this in terminal:

mesaflash --device --5i25
General configuration information:

BoardName : MESA5I25
FPGA Size: 9 KGates
FPGA Pins: 144
Number of IO Ports: 2
Width of one I/O port: 17
Clock Low frequency: 33.3333 MHz
Clock High frequency: 200.0000 MHz
IDROM Type: 3
Instance Stride 0: 4
Instance Stride 1: 64
Register Stride 0: 256
Register Stride 1: 256

Modules in configuration:

Module: WatchDog
There are 1 of WatchDog in configuration
Version: 0
Registers: 3
BaseAddress: 0C00
ClockFrequency: 33.333 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: IOPort
There are 2 of IOPort in configuration
Version: 0
Registers: 5
BaseAddress: 1000
ClockFrequency: 33.333 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: MuxedQCount
There are 12 of MuxedQCount in configuration
Version: 3
Registers: 5
BaseAddress: 3600
ClockFrequency: 33.333 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: 33.333 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: 33.333 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: 33.333 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Configuration pin-out:

IO Connections for P3
DB25 pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir

1 0 IOPort SSerial 0 TXEn2 (Out)
14 1 IOPort SSerial 0 TXData2 (Out)
2 2 IOPort SSerial 0 RXData2 (In)
15 3 IOPort SSerial 0 TXData1 (Out)
3 4 IOPort SSerial 0 RXData1 (In)
16 5 IOPort SSerial 0 TXData0 (Out)
4 6 IOPort SSerial 0 RXData0 (In)
17 7 IOPort MuxedQCountSel 0 MuxSel0 (Out)
5 8 IOPort MuxedQCount 0 MuxQ-A (In)
6 9 IOPort MuxedQCount 0 MuxQ-B (In)
7 10 IOPort MuxedQCount 0 MuxQ-IDX (In)
8 11 IOPort MuxedQCount 1 MuxQ-A (In)
9 12 IOPort MuxedQCount 1 MuxQ-B (In)
10 13 IOPort MuxedQCount 1 MuxQ-IDX (In)
11 14 IOPort MuxedQCount 2 MuxQ-A (In)
12 15 IOPort MuxedQCount 2 MuxQ-B (In)
13 16 IOPort MuxedQCount 2 MuxQ-IDX (In)

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

1 17 IOPort SSerial 0 TXEn5 (Out)
14 18 IOPort SSerial 0 TXData5 (Out)
2 19 IOPort SSerial 0 RXData5 (In)
15 20 IOPort SSerial 0 TXData4 (Out)
3 21 IOPort SSerial 0 RXData4 (In)
16 22 IOPort SSerial 0 TXData3 (Out)
4 23 IOPort SSerial 0 RXData3 (In)
17 24 IOPort MuxedQCountSel 6 MuxSel0 (Out)
5 25 IOPort MuxedQCount 3 MuxQ-A (In)
6 26 IOPort MuxedQCount 3 MuxQ-B (In)
7 27 IOPort MuxedQCount 3 MuxQ-IDX (In)
8 28 IOPort MuxedQCount 4 MuxQ-A (In)
9 29 IOPort MuxedQCount 4 MuxQ-B (In)
10 30 IOPort MuxedQCount 4 MuxQ-IDX (In)
11 31 IOPort MuxedQCount 5 MuxQ-A (In)
12 32 IOPort MuxedQCount 5 MuxQ-B (In)
13 33 IOPort MuxedQCount 5 MuxQ-IDX (In)

is there anything else i can test in software / firmware / drivers?

the pc only reboots when i try to run my configuration. i can run Sample configurations like "axis". But when i try to run the config i created using pncconf wizard the pc just reboots. i also does this if i try to Open Loop test or test / tune axis.

Does the pc have a metal housing (shielded), with the 6i25 inside? Or is it a motherboard mounted in a cabinet that also contains a VFD, relays, etc? If so, your motherboard will likely need additional shielding.

Yes the PC is in metal housing and right now it is outside the control cabinet. I am confident this is not a EMC issue.

i have bought a much older pc which i will test tommorow.

thanks so far.