Escape channel

The escape channel executes electrode escape motions that are superimposed on the motion of the down channel. The escape motion is triggered by commanding a negative velocity or a flushing process in the escape channel.

A standard program of the escape channel is shown below.

Programing Example

Standard program - escape channel

%Escape.nc

N3030 X[SET_POSITION POS=@PL1] Y[SET_POSITION POS=@PL2] Z[SET_POSITION POS=@PL3]

N3040 A[SET_POSITION POS=@PL10] B[SET_POSITION POS=@PL11] C[SET_POSITION POS=@PL12]

N3050 #SLOPE [TYPE=STEP]

;---- Define the escape geometry in the escape channel

N3060 #ESCAPE PATH DEF BEGINN

N3070 #CS ON [EAB] [@PL4,@PL5,@PL6,@PL7,@PL8,@PL9]

N3080 #ESCAPE PATH BACKWARD STOP

N3090 L PathErosion.sub

N3100 #ESCAPE PATH POST SEQUENCE

N3110 #CS DEL ALL

N3120 #ESCAPE PATH DEF END

; Limit the dynamics

N3130 G128=50 ; velocity

N3140 G131=50 ; acceleration

N3150 #TRACK CHAN ON[ ESCAPE="CH-Escape" START_POS="CH-Sinking" \
EXTEND_PARAM="CH-Planetary"]

N3160 #CHANNEL INTERFACE ON [DYN_CS]

N3170 #SIGNAL SYN [ID="S-EscapeReady" CH="CH-Sinking"]

N3180 M30

This program is started by the down channel when the escape channel is coupled (see N5002 in section Coupling programs).

N3030 and N3040 set the positions of the escape channel without a motion occurring. The positions to be set are transferred from the down channel at program start and correspond to the positions at the start of the geometry for erosion on the path.

The not jerk limited acceleration profile is selected in N3050.

In the escape channel, N3060 marks that the geometry description follows for erosion on the path. This motion is only saved by this mark so that the escape motion can be executed on this path.

The transfer parameters from the down channel in N3070 select the identical coordinate system as in the down channel.

The command in block number N3080 indicates that it is not permitted to retract further than this point.

Block number N3090 calls the identical subroutine containing the geometry for erosion on the path as in the down channel.

The end of the geometry motion blocks is marked in N3100. Switch and additional functions, e.g. M01, can still be programmed.

The coordinate system is deselected in N3110 and the entire end of the geometry is marked in N3120.

Attention

The coordinate systems must be deselected at the end of the geometry for erosion on the path.

As in the other programs, the dynamics are limited in N3120 and N3130 due to the superimposed channel constellation.

The escape strategy is parameterised in N3140. Here the channel from which the escape channel receives its start position must be specified as well as the number of the channel that acts as the orbit channel.

The escape channel opens an interface in N3150. This is the counterpart to N5001 (see section Coupling programs).

In block number N3160, a signal is sent to the down channel to indicate that the escape channel is ready.