HEIDENHAIN MANUALplus 620 Technical Manual page 1563

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January 2012

When the spindle speed or mode of rotation is changed in the T, S, F menu

or the NC program, a strobe signal is generated and communicated to the PLC

via the operand defined in MP_signal. At the same time the NC transmits the

programmed spindle speed in the PLC word defined in MP_spindleSpeed

and the constant cutting speed in the PLC word defined in MP_cuttingSpeed.

Depending on the value entered in the PLC word defined in MP_spindleMode

for the spindle rotation, the PLC evaluates either MP_spindleSpeed (with

constant spindle speed = 96) or MP_cuttingSpeed (with constant cutting

speed = = 97).

If there are several spindles in an NC channel, you must enter in MP_type

which spindle the S strobe is to refer to.

The PLC checks the programmed spindle speed in addition. The result of this

check is saved in the PLC marker defined in MP_badSpeed. If the marker is

set, the spindle speed is outside the permissible range. If MP_badSpeed is

not defined, the spindle speed is not checked.

If there are several spindles in an NC channel, you must enter

in MP_type which spindle the S strobe is to refer to.

Available from NCK software version: 597 110-01.

Numerical value

0: S strobe refers to the main spindle

1: S strobe refers to spindle 1 (driven tool)

2: S strobe refers to spindle 2 (driven tool)

3: S strobe refers to opposing spindle

MP_spindleSpeed

Symbolic name or number of the PLC word for transmitting the

spindle speed

Available from NCK software version: 597 110-01.

Name of the PLC word in which the spindle speed is

transmitted to the PLC

If the parameter is missing, the spindle speed cannot be read as

a numerical value.

No value, parameter optional

8.7 S Function (S Strobe)