5i25/6i25 bitfile for DMB4350-8B bob

PCW
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13 Feb 2021 00:10 #198621 by PCW

Replied by PCW on topic 5i25/6i25 bitfile for DMB4350-8B bob

So does 10000 work (scaled right) for inches?

You may have set the scale way off in mm so the motion is very small

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0jw
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13 Feb 2021 00:16 #198623 by 0jw

Replied by 0jw on topic 5i25/6i25 bitfile for DMB4350-8B bob

It's moving in millimeters now but it's still moving twice the distance

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PCW
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13 Feb 2021 00:28 #198624 by PCW

Replied by PCW on topic 5i25/6i25 bitfile for DMB4350-8B bob

Sounds like the drive is using 1000 steps/turn
if a stepscale of 393.70079 (0.1968503937 TPMMx2000)
moves twice as far as expected

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0jw
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13 Feb 2021 00:57 #198628 by 0jw

Replied by 0jw on topic 5i25/6i25 bitfile for DMB4350-8B bob

According to the DYN4 drives manual "Gear_Numis 500, means 2000steps will turn motor ONE revolution, and Gear_Num= 1000, means4000steps will turn motor one revolution.In general, 4 * Gear_Numsteps will turn motor one turn"
it is set to 500 for a 2000 steps per revolution. maybe something to do with older firmware on the drives. I'll try set the drives to (Gear_Num=1000) for 4000 steps per revolution

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0jw
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13 Feb 2021 01:13 #198630 by 0jw

Replied by 0jw on topic 5i25/6i25 bitfile for DMB4350-8B bob

this didn't fix the problem.

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PCW
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13 Feb 2021 01:44 #198633 by PCW

Replied by PCW on topic 5i25/6i25 bitfile for DMB4350-8B bob

Sounds like the DMM scaling is not working as expected.
Does the machine motion change when you change the DMM scaling?

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0jw
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13 Feb 2021 02:09 #198634 by 0jw

Replied by 0jw on topic 5i25/6i25 bitfile for DMB4350-8B bob

yes it scales accordingly.

with a gear ratio Num of 500x4=2000. 200 steps in pncconf and stepconf will move 1 rotation.
with a gear ratio Num of 1000x4=4000. 400 steps in pncconf and stepconf will move 1 rotation.

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0jw
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13 Feb 2021 02:18 - 13 Feb 2021 02:20 #198635 by 0jw

Replied by 0jw on topic 5i25/6i25 bitfile for DMB4350-8B bob

I think I will set gearNum 4000x4=16,000 or gearNum 2000x4=8,000 and 1,600 or 800 steps for now. hopefully it is doing something similar to microstepping inside the drives. But I may have to update the firmware.
I don't think this is a problem with new drives. These are from when the dyn4 was first released.

Last edit: 13 Feb 2021 02:20 by 0jw.

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0jw
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13 Feb 2021 03:52 #198645 by 0jw

Replied by 0jw on topic 5i25/6i25 bitfile for DMB4350-8B bob

X and Y axis are working along with limit switches. but not Z axis. it looks like i need pin 6 for Dir and pin 7 for step. so IO 9 and IO 10

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PCW
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13 Feb 2021 03:58 #198647 by PCW

Replied by PCW on topic 5i25/6i25 bitfile for DMB4350-8B bob

Stepgen 2 is on pins 6 and 7:

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

 1      0   IOPort       PWMGen           0        PWM             (Out)
14      1   IOPort       None
 2      2   IOPort       StepGen          0        Dir             (Out)
15      3   IOPort       None
 3      4   IOPort       StepGen          0        Step            (Out)
16      5   IOPort       None
 4      6   IOPort       StepGen          1        Dir             (Out)
17      7   IOPort       None
 5      8   IOPort       StepGen          1        Step            (Out)
 6      9   IOPort       StepGen          2        Dir             (Out) <<<<<<<<<<
 7     10   IOPort       StepGen          2        Step            (Out) <<<<<<<<<<
 8     11   IOPort       StepGen          3        Dir             (Out) 
 9     12   IOPort       StepGen          3        Step            (Out)
10     13   IOPort       None
11     14   IOPort       QCount           0        Quad-A          (In)
12     15   IOPort       QCount           0        Quad-B          (In)
13     16   IOPort       QCount           0        Quad-IDX        (In)

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