M-Series Operator’s Manual 4/9/15
Parameters 256 – Drive Mode
This parameter indicates to the control software what mode the drives are operating under. It also controls the
availability and behavior of the F5 Tune key in the PID Menu based on the drive mode.
Drive mode Value
Torque mode. Autotune feature is enabled, accessible via F5 in
PID Menu
0
Velocity mode. Autotune feature is disabled. Autotune does not
work with velocity mode drives and therefore this parameter
should be set to 1 to prevent access to Autotune on such machines
with these drives.
1
Precision mode. This enables the Precision Mode delay parameters
340-347. This also enables the Auto Delay Calculation feature,
accessible via F5 in PID Menu, which is used to automatically
calculate these parameters.
2
Parameter 257 – TT1 connection detection PLC input
This parameter stores the input for the TT1 connection detection feature. The spindle inhibit parameter (parameter 18)
must be set (non-zero) for this feature to work. The default for this parameter is 0, which disables this feature. When
this parameter is set (non-zero), the Tool Measuring cycle will not run unless a TT1 or a probe is connected. A
negative value must be entered if a "normally closed" input is to be used with the control. A positive value must be
entered if a "normally open" input is to be used with the control. The absolute value of this parameter will directly
reflect the PLC input the TT1 connection detect is wired to.
Parameter 258 – Velocity/Torque Mode override in Precision mode
This is an axis bitfield where setting a bit to ‘on’ allows the corresponding axis to run as if it were in velocity or torque
mode, but prone to servo mismatch errors. Bit 0 (value 1) refers to axis #1, bit 1 (value 2) refers to axis #2, bit 2 (value
4) refers to axis #3, bit 3 (value 8) refers to axis #4, and so forth.
Parameter 259 – Manual Axis Designation
This parameter is a bit field that designates an axis as a manual axis regardless of its label. Bit 0 (value 1) refers to
axis #1, bit 1 (value 2) refers to axis #2, bit 2 (value 4) refers to axis #3, bit 3 (value 8) refers to axis #4, and so forth.
(Note that there is another way to designate an axis as a manual axis, which is to set its label to “M” or “@”.)
Parameter 260 – Accelerated Graphics Backplot
This parameter controls the user interface that is presented when F8 – Graph is pressed. See Chapter 3 for more
information about Accelerated Graphics Backplot.
Function Value
Use the original Graphics Backplot -1
Use the new Accelerated Graphics Backplot 1
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