7C81 - It appears that I have the wrong BOB, what now?
20 Jun 2023 14:05 - 20 Jun 2023 14:41 #273934
by MrRekt
It appears I made an error in my opening post regarding P4, P10, and P14, which should be corrected above.
The provided pinout table:
The provided pinout photo:
You may notice some discrepancies in these two images.
It appears that P14 may actually be the 3rd relay? P4 is listed in the photo as both a relay and a "shaft output" but the jumpers in the middle of the board have a note (look for the yellow arrow) calling it P14. Additionally, the "standby signals" for each of the relays account for P2, P3, and P14.
This leads me to think that - in spite of the table calling P4 a relay - it's likely intended to be used to drive a motor --- P4-9, 16, and 17 are labeled as "shaft output ports" in the photo...
Replied by MrRekt on topic 7C81 - It appears that I have the wrong BOB, what now?
# Summery of my BOB's LPT configuration
P1 PWM (spindle control)
P2 Output (spindle relay)
P3 Output (coolant relay)
P4 Output (motor control)
P5 Output (motor control)
P6 Output (motor control)
P7 Output (motor control)
P8 Output (motor control)
P9 Output (motor control)
P10 Input (digital)
P11 Input (digital)
P12 Input (digital)
P13 Input (digital)
P14 Output (aux relay)
P15 Input (digital)
P16 Output (motor control)
P17 Output (motor control)
P18 GND
P19 GND
P20 GND
P21 GND
P22 GND
P23 GND
P24 GND
P25 GNDIt appears I made an error in my opening post regarding P4, P10, and P14, which should be corrected above.
The provided pinout table:
The provided pinout photo:
You may notice some discrepancies in these two images.
It appears that P14 may actually be the 3rd relay? P4 is listed in the photo as both a relay and a "shaft output" but the jumpers in the middle of the board have a note (look for the yellow arrow) calling it P14. Additionally, the "standby signals" for each of the relays account for P2, P3, and P14.
This leads me to think that - in spite of the table calling P4 a relay - it's likely intended to be used to drive a motor --- P4-9, 16, and 17 are labeled as "shaft output ports" in the photo...
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20 Jun 2023 17:09 - 20 Jun 2023 17:10 #273949
by MrRekt
Thank you!
Here's the pinout for P1 and P2, if anyone else happens to find themselves with the same bob:- and P7 is left open for IO
One more pinout related question before I get myself lost in the HAL file -
Does this type of ribbon-cable provide the necessary DCI26-to-DB25 wiring?:
I'm not familiar with the numbering convention for standard headers...
Replied by MrRekt on topic 7C81 - It appears that I have the wrong BOB, what now?
Here's a config that will allow you to use 2 relays
(or all 3 if you can actually use pin 14 for a relay)
Thank you!
Here's the pinout for P1 and P2, if anyone else happens to find themselves with the same bob:
Configuration pin-out:
IO Connections for P1+Serial -> 7C81_0
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir
P1-01/DB25-01 0 IOPort PWM 0 PWM (Out)
P1-02/DB25-14 1 IOPort None
P1-03/DB25-02 2 IOPort StepGen 4 Step/Table1 (Out)
P1-04/DB25-15 3 IOPort None
P1-05/DB25-03 4 IOPort StepGen 4 Dir/Table2 (Out)
P1-06/DB25-16 5 IOPort StepGen 3 Step/Table1 (Out)
P1-07/DB25-04 6 IOPort StepGen 0 Step/Table1 (Out)
P1-08/DB25-17 7 IOPort StepGen 3 Dir/Table2 (Out)
P1-09/DB25-05 8 IOPort StepGen 0 Dir/Table2 (Out)
P1-11/DB25-06 9 IOPort StepGen 1 Step/Table1 (Out)
P1-13/DB25-07 10 IOPort StepGen 1 Dir/Table2 (Out)
P1-15/DB25-08 11 IOPort StepGen 2 Step/Table1 (Out)
P1-17/DB25-09 12 IOPort StepGen 2 Dir/Table2 (Out)
P1-19/DB25-10 13 IOPort None
P1-21/DB25-11 14 IOPort QCount 0 Quad-A (In)
P1-23/DB25-12 15 IOPort QCount 0 Quad-B (In)
P1-25/DB25-13 16 IOPort QCount 0 Quad-IDX (In)One more pinout related question before I get myself lost in the HAL file -
Does this type of ribbon-cable provide the necessary DCI26-to-DB25 wiring?:
I'm not familiar with the numbering convention for standard headers...
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28 Jun 2023 00:08 #274348
by MrRekt
Replied by MrRekt on topic 7C81 - It appears that I have the wrong BOB, what now?
I'm looking for signs of life in the I/O and haven't been able to find any -
(If I should open a new thread for this, please let me know...)
I ran:... and rebooted.
Then I ran:which gave meLooking in the PIN_ file, I see:
(just showing P1; simplified for clairity)And I ran the Pncconf Wizard with as many of the default settings as possible for a 3-step/dir and 1-PWM machine. I used INI substitution, unchecked any options under "Defaults and Options", and configured temporarily for "5i25-Internal Data" with "G540x2" almost identically to how it was done in this video (except for XYZ and not just XY):
I then adjusted the card name in the INI from "hm2_5i25" to "hm2_7c81", and updated the HAL file with "loadrt hm2_rpspi ..." to account for being on a RapsberryPi.
I then pulled out my oscilloscope to check for signs of life on the x-axis' step pin, as below:
I then proceeded to manually jog along the x-axis and looked to see if the oscilloscope saw anything as I did.
All it saw, at any resolution, was a solid 5.129 volts; no waveform at all...
I check other pins in this manner, and it's all more-or-less the same story at 5 volts or 0 volts.
What am I doing wrong?
(If I should open a new thread for this, please let me know...)
I ran:
sudo mesaflash --device 7C81 --addr /dev/spidev0.0 --spi --fix-boot-block --write 7c81_c5abobx2d.bitThen I ran:
sudo mesaflash --device 7c81 --addr /dev/spidev0.0 --spi --readhmid...
Configuration pin-out:
IO Connections for P1+Serial -> 7C81_0
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir
P1-01/DB25-01 0 IOPort PWM 0 PWM (Out)
P1-02/DB25-14 1 IOPort None
P1-03/DB25-02 2 IOPort StepGen 4 Step/Table1 (Out)
P1-04/DB25-15 3 IOPort None
P1-05/DB25-03 4 IOPort StepGen 4 Dir/Table2 (Out)
P1-06/DB25-16 5 IOPort StepGen 3 Step/Table1 (Out)
P1-07/DB25-04 6 IOPort StepGen 0 Step/Table1 (Out)
P1-08/DB25-17 7 IOPort StepGen 3 Dir/Table2 (Out)
P1-09/DB25-05 8 IOPort StepGen 0 Dir/Table2 (Out)
P1-11/DB25-06 9 IOPort StepGen 1 Step/Table1 (Out)
P1-13/DB25-07 10 IOPort StepGen 1 Dir/Table2 (Out)
P1-15/DB25-08 11 IOPort StepGen 2 Step/Table1 (Out)
P1-17/DB25-09 12 IOPort StepGen 2 Dir/Table2 (Out)
P1-19/DB25-10 13 IOPort None
P1-21/DB25-11 14 IOPort QCount 0 Quad-A (In)
P1-23/DB25-12 15 IOPort QCount 0 Quad-B (In)
P1-25/DB25-13 16 IOPort QCount 0 Quad-IDX (In)
P5 3,6 17 IOPort SSerial 0 TXData0 (Out)
P6 3,6 18 IOPort SSerial 0 TXData1 (Out)
...(just showing P1; simplified for clairity)
...
26 HDR DB25
00 PWM PIN 01 PIN 01 Spindle DAC PWM
00 Null PIN 02 PIN 14 just GPIO
04 StepGen PIN 03 PIN 02 B Step
00 Null PIN 04 PIN 15 just GPIO
04 StepGen PIN 05 PIN 03 B Dir
03 StepGen PIN 06 PIN 16 A Step
00 StepGen PIN 07 PIN 04 X Step
03 StepGen PIN 08 PIN 17 A Dir
00 StepGen PIN 09 PIN 05 X Dir
01 StepGen PIN 10 PIN 06 Y Step
01 StepGen PIN 11 PIN 07 Y Dir
02 StepGen PIN 12 PIN 08 Z Step
02 StepGen PIN 13 PIN 09 Z Dir
00 Null PIN 14 PIN 10 Input 1 just GPIO
00 QCount PIN 15 PIN 11 Input 2 (Quad A)
00 QCount PIN 16 PIN 12 Input 3 (Quad B)
00 QCount PIN 17 PIN 13 Input 4 (Quad Idx)
00 SSerial I/O 17
00 SSerial I/O 18
...I then adjusted the card name in the INI from "hm2_5i25" to "hm2_7c81", and updated the HAL file with "loadrt hm2_rpspi ..." to account for being on a RapsberryPi.
I then pulled out my oscilloscope to check for signs of life on the x-axis' step pin, as below:
I then proceeded to manually jog along the x-axis and looked to see if the oscilloscope saw anything as I did.
All it saw, at any resolution, was a solid 5.129 volts; no waveform at all...
I check other pins in this manner, and it's all more-or-less the same story at 5 volts or 0 volts.
What am I doing wrong?
Attachments:
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28 Jun 2023 01:43 - 28 Jun 2023 02:54 #274351
by MrRekt
Replied by MrRekt on topic 7C81 - It appears that I have the wrong BOB, what now?
I went ahead and grounded pins 18-25, and no joy.
If if the watchdog was triggered, how do I check?
I assume that it would keep me from moving anything, but Hal Meter says steps are still being sent:
- edit -
Doesn't seem to be the watchdog...
If it's any help, the only LOW pins are "X Dir" at 0.05V and "Z Dir" at 0.00V... "Y Dir" is HIGH for whatever reason. Even pins that I don't use are HIGH, like step and direction for both A and B axis. (I'm referencing the PIN_ file provided to me previously in this thread)
If if the watchdog was triggered, how do I check?
I assume that it would keep me from moving anything, but Hal Meter says steps are still being sent:
- edit -
Doesn't seem to be the watchdog...
If it's any help, the only LOW pins are "X Dir" at 0.05V and "Z Dir" at 0.00V... "Y Dir" is HIGH for whatever reason. Even pins that I don't use are HIGH, like step and direction for both A and B axis. (I'm referencing the PIN_ file provided to me previously in this thread)
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