106 •
750-671 [Steppercontroller]
Positioning
WAGO-I/O-SYSTEM
750
I/O
Modules
The software limit switches are defined by the limits Drive_Range_Neg and
Drive_Range_Pos in the Configuration table. The limit Drive_Range_Neg
restricts the range to smaller positions, i.e. in the negative direction, while
Drive_Range_Pos restricts the range for larger positions, i.e. in the positive
direction.
The software limit switches are only active in the Positioning and Move
program via mailbox modes, as well as some subfunctions being available in
the Jog mode. The switches are not evaluated in other modes.
Attention
During a reference run, limiting of the moving range is not evaluated by the
software limit switch! This may result in damage to the system if proper
functioning of the hardware limit switch is not ensured!
The limits Drive_Range_Neg and Drive_Range_Pos define the permissible
range of movement. If one of these defined limits is violated, the associated bit
is set.
The default setting is Drive_Range_Neg = 0x800001 and Drive_Range_Pos =
0x7FFFFF.
If movement is made beyond a defined movement range, the drive is brought
to standstill using the defined deceleration Acceleration_Stop_Fast and, after
that, only those directions of movement accepted that move the unit back into
the permissible range; the exception here is the Jog mode.
In the Jog mode the drive is brought to a standstill each time it attempts to
move out of the permissible range. In this mode the drive can also be operated
outside the movement range defined by the software limit switches with
repeated JOG commands. The software limit switches are not active again
until the drive is back within the defined range.
