Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: hitchhiker on August 01, 2021, 09:08:27 AM

Title: Old VFD with USS Protocol and Rs485? need help
Post by: hitchhiker on August 01, 2021, 09:08:27 AM

hi i have a old vfd from siemens.

it used a Protocol with the name USS.

it works over terminal via rs485 adapter.

but i want to use the vfd with mach3.
i use the vfd with pwm to 0-10V and 2 Relays.

first relay for start stop
second relay for left/right

works fine but is it possible to use the vfd via modbus or a plugin?

i attached the protocol pdf file

Title: Old VFD with USS Protocol and Rs485? need help
Post by: hitchhiker on August 03, 2021, 12:06:01 PM

Hi i own a old VFD wich works via rs485

the Protocol is the USS Protocol from siemens.

is it possible to use the vfd with mach3 via rs485?
its not modbus!

thanks