To set some parameters you can use following terminal code.
You can integrate the command's into your gui if you want to later on in some kind of settings tab.
You can use the lcec_el7041_1000 driver. It has more step resolution.
The el7041_1000 i tested on a real machine. This was a good one. You need the higher resolution with linuxcnc to have a nice step output. At the end. The 5 amp's are to low powered for making a nema 32 moving fast forward. 20m/min.
The el7041_1000 and other 5 amp's stepper series are usable for tiny machines, like 3d printers or application's like chip picking or printer application's
