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What is PP?
Parallel port?
Path Pilot?
Polypropylene?
....

Are the encoders differential or single ended and is the 7I77 jumpered to match?

Voltage looks good as well. Getting 4.9 volts at encoders and 23.9 volts at vin.

There are ways to use homing to index with an added
proximity switch that detects a flag on the stepper shaft.
(this does not require an encoder)

A flag on the shaft with a 1" radius will increase the homing
accuracy by a factor of about 30 (assuming 5mm/0.2" pitch
ballscrew and same linear and flag proximity switches)
 

Are the 7I77 encoder jumpers set to match the encoder type?
(differential or single ended)

Nothing happens when I move the encoder or the amplifier. It’s like the rest are not active except encoder 2 port. It flickers but does not read properly it just shows some change.

Thx much, this is actually PP, does that change anything?

OK that looks OK so the 7I92T I/O is likely OK

If you simply move the encoder plug from 7I77 encoder input 0 and
plug into encoder input 1, (drives disabled) Does the encoder 1 position
change when you rotate the encoder 0 motor shaft?
 
Also for encoder 2

What does it read?

If you watch GPIO 7..16  in the halshow watch tab, do they change/ flicker
when you rotate the shaft?


 

Joint/axis velocity in the ini file
max_velocity
That will be once on versions prior to 2.8 and twice in joint and axis for versions above 2.8.
Might also need to change the max_angular_velocity in the display section of the ini file.

This is the result for the 7i92t unplugged from the 7i77.

~$ mesaflash --addr 10.10.10.10 --device=ETHER --rpo 0x1000
0001FFFF

I tried something different here with the following result.

~$ mesaflash --addr 10.10.10.10 --device=ETHER --rpo 0x1000
000192FF

Hello,

I have an Amazon 4th axis that features a 6:1 reduction drive.

I found the thread here where you adjust the SCALE so that a G0 A360 will turn the axis a proper 360°. 

However, the drive spins too slowly. 

I can double the SCALE, which gives me the speed I want, but then I have to do something like G0 A180 for a full turn.

Is there a way I can speed the drive up, while maintaining proper scale? 

In that case

mesaflash --addr 10.10.10.10 --device=ETHER --rpo 0x1000

should work

(with 7I77 disconnected)

I also bought lm331 to convert current from a dc spindle... I made a small circuit, but I haven't tried it for almost a year because my brother had serious health problems. I'll try in a few days, maybe we can help each other.
regards
Mauro

~$ mesaflash --addr 10.10.10.10 --device=ETHER --readhmid
Configuration Name: HOSTMOT2

General configuration information:

BoardName : MESA7I92
FPGA Size: 20 KGates
FPGA Pins: 256
Number of IO Ports: 2
Width of one I/O port: 17
Clock Low frequency: 100.0000 MHz
Clock High frequency: 180.0000 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 2 of IOPort in configuration
Version: 0
Registers: 5
BaseAddress: 1000
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes

Module: MuxedQCount
There are 12 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 P2
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 P1
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)