I'm not understanding these modbuss addresses

I'm not understanding these addresses or which is the correct one to enter

These are the GS2 registers

Hi,
we'll figure it out. Firstly the Modbus screen is different to that which shows up in 066 version. What version of Mach3 are you running?

Believe it or not the fact that the drive faults out is good, it means that something is getting through, the fault rather tells us it the wrong something but something
is getting there.

I posted the memory addresses of the three relevant GS2 parameters to operate the VFD. they started at 42331 to 42333. In addition each Modbus slave
device has an 'address' as well which rather complicates things. In your case you only have one Modbus slave, your VFD, and the manufacturer has programmed
its slave address as default of 01.

I propose you have three distinct config's, one for each value to be transmitted.

I will look a little more closely and come back to you.

Craig

Hi,
Have you manually programed P 9.02 to 03 as I asked? You will need to use the VFD screen buttons.

Open your PC Device Manager and find the port no. that the RS485 adapter is plugged into.

On the Modbus config screen:
port number: whatever port number you are plugging your 485 adapter into, baud rate=9600, change 8-1-0 to 8-0-2
Cfg #0      <enabled>          CW/CCW      port no. as above              slave address 01     refresh incr 100ms   address 42333      #regs 1    output holding
Cfg #1      <enabled>          Start/stop     port no. as above              slave address 01     refresh incr 100ms   address 42332      #regs 2    output holding
Cfg #3      <enabled>          Freq Cmd     port no. as above              slave address 01     refresh incr 100ms   address 42331      #regs 3    output holding

Try that for starters while I dig up some other stuff.

Craig

Hi,
while you are about programming your P 9.02 parameter to 03  also program P 3.00 to 03 which tells the VFD to use the 485 Modbus input as it frequency
command. Note that the Stop button on the VFD screen/panel still works.

Craig

Hi,
should have pointed out I found P 3.00 on page 4.3 of the users manual.

Craig

Hi,
let me know how you get on with these things, I think now that you should be able to <Test Modbus> for a affirmative response, hope I'm not being
to overconfident but it doesn't hurt to try right?

Craig

Mach3 version 3.043.066
Yes I'm confident that both the computer port and the drive match
I have Both set to port 4 9600,8,odd,1stop

Port