jog (step mode) not working on start up

[oraclian]

when I first start up UCCNC the continuous jog works ok but the step jog moves the DRO (very slowly) but the axis doesn't move. Once I load and run a program step mode works fine...I wrote a simple program that just moves each axis a small amount and run this on startup and once it has run step jog works ok. but would like a permanent fix...any ideas.

[cncdrive]

This is not something to be fixed, it works like this for reason.
The step jog moves runs with the set feedrate (Fset).
When you loading and running a g-code program it probably sets the feedrate to a different value, so the step jog will become faster,
because on startup the Fset is set to a low value of 6.
What you can do is you can type in an F command in the MDI.
E.g. if you want the step jog to run at 1000 units/min then type in F1000 into the MDI.

[oraclian]

Thank you (cncdrive) that solves my problem. That it works this way is somewhat odd. i understand why the continuous jog rate is set to a low value at start up and how to fix it if I want too, i don't bother and adjust it manually depending on what i am doing. However the speed of the step move is not particularly important with small moves like 1 unit so why is the start up default not set to ,say, F1000 automatically ?

[cncdrive]

It is set to a low value, because the Fset is the feedrate not only for the step jog, but also for other motion commands, MDI and g-code file commanded movements.
So, if the Fset would be set high on startup and you typing in a motion command to the MDI or if your g-code file accidentally does not contain the F code to set the feedrate then your machine would run those commands fast.
This could be a safety issue.

But if you find the initial Fset to be too low for you then you could change it with some macro code in the M99998 constructor macro.