Fagor 8055 M, Programming Manual

Page: 83 / 482

Programming manual
CNC 8055
CNC 8055i
ISO CODE
PR
OGRAMMING
5.
·M· & ·EN· M
ODELS
S
OFT
: V02.2
X
·83·
Au
xilia
ry function
(M)
5.7.8 M41, M42, M43, M44. Spindle gear change
The CNC offers 4 spindle speed ranges M41, M42, M43 and M44 with maximum speed limits set
by the spindle machine parameters "MAXGEAR1", MAXGEAR2", "MAXGEAR3" and
"MAXGEAR4".
If machine parameter "AUTOGEAR" is set so the CNC executes the range change automatically,
M41 thru M44 will be sent out automatically by the CNC without having to be programmed.
If this machine parameter is set for non-automatic gear change, M41 thru M44 will have to be
programmed every time a gear change is required. Bear in mind that the maximum velocity
command value assigned to machine parameter "MAXVOLT" corresponds to the maximum speed
indicated for each one of the speed ranges (machine parameters "MAXGEAR1" thru
"MAXGEAR4").
Regardless of whether the gear change is automatic or not, functions M41 through M44 may have
an associated subroutine. If the function M41 through M44 is programmed and then an S
corresponding to that gear, it does not generate the automatic gear change and it does not execute
the associated subroutine.