H100 VFD

[ennio64]

The board is MKS Tinybee.

I have several problems with this driver:

• does not increase speed (always works at the min speed set in the register (my set is 7200 rpm));
• M5 does not always stop the spindle, sometimes it stops with M3 S0 or M3 S0 must precede M5;
• M3 and M4 always rotate in the same direction.

I analyzed the data flow on Modbus by comparing a working configuration to verify what happens (I attach the files).
H100 whith FluidNC.txt
H100 whith grblHAL.txt

Whith grblHAL the commands M3, M4 and M5 are received correctly, but he speed S(xxxx) is written in the register with address 512 instead of 513, and I think it is the cause of the speed limitation and maybe also the other problems.

This log is when IOSENDER send M3 S10000 (firmware fluiNC):

[14/09/2023 15:36:49]
Modbus Response (COM11)
Address: 1
Function: 6 (0x06) - Write Single Register
Address: 513
Value: 1666
Checksum: 0x5a73 - OK

[14/09/2023 15:36:50]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 05 c2 06 82
Register0: 1474
Register1: 1666
Checksum: 0xd975 - OK

[14/09/2023 15:36:50]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 06 6f 06 82
Register0: 1647
Register1: 1666
Checksum: 0x48d0 - OK

[14/09/2023 15:36:50]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 06 82 06 82
Register0: 1666
Register1: 1666
Checksum: 0xd8e5 - OK

The spindle run at 10000 rpm correctly.

This log is when IOSENDER send M3 S10000 (firmware grblHAL):

(send M3 S10000)

[14/09/2023 17:21:16]
Modbus Response (COM11)
Address: 1
Function: 5 (0x05) - Write Single Coil
Address: 73
Value: 65280
Checksum: 0x5dec - OK

[14/09/2023 17:21:16]
Modbus Response (COM11)
Address: 1
Function: 6 (0x06) - Write Single Register
Address: 512 <<<<<<<<<<<<<<<<< (not is 513)
Value: 1670
Checksum: 0x0a70 - OK

[14/09/2023 17:21:16]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 00 73 00 32
Register0: 115
Register1: 50 <<<<<<<<<<<<<<<<<<< (always locked to 50)
Checksum: 0x8b8a - OK

[14/09/2023 17:21:17]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 02 af 00 32
Register0: 687
Register1: 50
Checksum: 0x4bc8 - OK

[14/09/2023 17:21:18]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 04 b0 00 32
Register0: 1200 <<<<<<<<<<<<<<<<<<< (instant speeds 1200=7200 rpm)
Register1: 50
Checksum: 0x7a86 - OK

[14/09/2023 17:21:22]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 04 b0 00 32
Register0: 1200
Register1: 50
Checksum: 0x7a86 - OK

Register1 (which should set the speed to reach) is blocked at 50. The splindle run to min speed 7200 rpm

I attach the manual of my VFD
new H100 manual V1.8.pdf

Is there anyone who uses this driver or has done any testing?
Thanks

[terjeio]

MODVFD could not be used?

[ennio64]

I tried but I can't make it work. If it works with FluidNC it must also work with grblhal the Vfd H100 is the same.

[ennio64]

I think that the problem is the 512 address

[ennio64]

The commands that the grblhal driver sends to the Vfd are the same as those sent by fluidnc, except that it writes the speed to be reached in address 512 instead of 513.

[terjeio]

Try this binary:

app-template.zip

[ennio64]

Thanks for now, I'll let you know on monday, I'm out now.

[ennio64]

Perfect. Work perfect.

>>> send M3 S7200

[18/09/2023 09:17:11]
Modbus Response (COM11)
Address: 1
Function: 5 (0x05) - Write Single Coil
Address: 73
Value: 65280
Checksum: 0x5dec - OK

[18/09/2023 09:17:11]
Modbus Response (COM11)
Address: 1
Function: 6 (0x06) - Write Single Register
Address: 513
Value: 1202
Checksum: 0x5b07 - OK

[18/09/2023 09:17:11]
Modbus Response (COM11)
Address: 1
Function: 6 (0x06) - Write Single Register
Address: 513
Value: 1202
Checksum: 0x5b07 - OK

[18/09/2023 09:17:11]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 00 00 04 b2
Register0: 0
Register1: 1202
Checksum: 0x7931 - OK

[18/09/2023 09:17:11]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 0
Values:
Checksum: 0x71cb - OK

[18/09/2023 09:17:11]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 00 db 04 b2
Register0: 219
Register1: 1202
Checksum: 0x090a - OK

[18/09/2023 09:17:12]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 02 59 04 b2
Register0: 601
Register1: 1202
Checksum: 0xa89a - OK

[18/09/2023 09:17:12]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 03 d8 04 b2
Register0: 984
Register1: 1202
Checksum: 0xf94e - OK

[18/09/2023 09:17:13]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 04 b2 04 b2
Register0: 1202
Register1: 1202
Checksum: 0xd826 - OK

(The spindle run 7200 rpm)

>>> send M3 S10000

[18/09/2023 09:17:19]
Modbus Response (COM11)
Address: 1
Function: 5 (0x05) - Write Single Coil
Address: 73
Value: 65280
Checksum: 0x5dec - OK

[18/09/2023 09:17:19]
Modbus Response (COM11)
Address: 1
Function: 6 (0x06) - Write Single Register
Address: 513
Value: 1670
Checksum: 0x5bb0 - OK

[18/09/2023 09:17:19]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 04 b2 06 86
Register0: 1202
Register1: 1670
Checksum: 0xd891 - OK

[18/09/2023 09:17:19]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 0
Values:
Checksum: 0x71cb - OK

[18/09/2023 09:17:19]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 04 c8 06 86
Register0: 1224
Register1: 1670
Checksum: 0xf948 - OK

[18/09/2023 09:17:20]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 05 78 06 86
Register0: 1400
Register1: 1670
Checksum: 0xf953 - OK

[18/09/2023 09:17:20]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 06 86 06 86
Register0: 1670
Register1: 1670
Checksum: 0x98e7 - OK

(The spindle run 10000 rpm)

>>> send M5

[18/09/2023 09:17:24]
Modbus Response (COM11)
Address: 1
Function: 5 (0x05) - Write Single Coil
Address: 75
Value: 65280
Checksum: 0xfc2c - OK

[18/09/2023 09:17:24]
Modbus Response (COM11)
Address: 1
Function: 6 (0x06) - Write Single Register
Address: 513
Value: 1200
Checksum: 0xdac6 - OK

[18/09/2023 09:17:24]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 06 86 04 b0
Register0: 1670
Register1: 1200
Checksum: 0x1991 - OK

[18/09/2023 09:17:24]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 06 01 04 b0
Register0: 1537
Register1: 1200
Checksum: 0xa9b8 - OK

[18/09/2023 09:17:24]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 05 44 04 b0
Register0: 1348
Register1: 1200
Checksum: 0xb829 - OK

[18/09/2023 09:17:25]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 03 c5 04 b0
Register0: 965
Register1: 1200
Checksum: 0xe889 - OK

[18/09/2023 09:17:25]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 03 06 04 b0
Register0: 774
Register1: 1200
Checksum: 0x18b5 - OK

[18/09/2023 09:17:25]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 02 47 04 b0
Register0: 583
Register1: 1200
Checksum: 0x495d - OK

[18/09/2023 09:17:26]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 00 c8 04 b0
Register0: 200
Register1: 1200
Checksum: 0x790e - OK

[18/09/2023 09:17:26]
Modbus Response (COM11)
Address: 1
Function: 4 (0x04) - Read Input Registers
Byte Count: 4
Values: 00 00 04 b0
Register0: 0
Register1: 1200
Checksum: 0xf8f0 - OK

(The spindle is stopped)

M3, M4 and M5 now work very fine.

Thanks.