Techserv CNC Controller
2. Main Screen
6. Cutting with Plasma
Making a cut
Stepping through pierces
What to do if
Arc Voltage Controls
7. Cutting with Gas
What to do if
8. Jog Functions
9. Manual Cut
The Techserv CNC system is a intuitive PC based controller designed specifically for 2D cutting using plasma, gas and water jet processes.
The Controller can be retrofitted to upgrade older machines.
Selecting material thickness, type and cutting current automatically sets cutting speed, initial height, cutting height, pierce delay, arc voltage height etc.
When used in conjunction with a suitable Plasma, gas pressures / flow and cutting current are automatically controlled.
When flame cutting, oxygen pre-heat and cut pressures are automated.
Cutting speed can be varied on the fly, along with all height sense parameters, oxygen pressure etc
The CNC system produces a daily log file, detailing most functions including, cut on, gas on, job running, job name, screen name etc. Data is logged per second and an off line viewing programme gives an easy to read visual indication of activity together with a job list and timings.
Comprehensive diagnostics and test screens allow all functions to be checked. Network connectivity provides for remote log-in and faut finding.
Numerous drawing file types can be imported, including ESSI, Word Address, GCode and DXF etc. Parts can be previewed prior to selection and rotated, mirrored and scaled if necessary.
The ‘Flexi Shape’ facility incorporates a range of templates, from rectangles and rings through to lugs and floor plates. Selecting a generic shape and following the simple dimension prompts creates a part that can be nested, cut and saved with no further programming.
The ‘Manual Cut’ facility enables basic control of the cut process and point to point cutting. Normally automated processes ie. Cut speed, height sense etc are maintained.
Semi automatic nesting fills plates with minimum wastage, allowing multiple parts to be cut from a sheet. Also row and column array nesting with adjustable scrap allowance make the most use of the plate.
Super-Hole Technology optimises plasma hole cut quality for ‘bolt ready’ holes.
Starts the controller software
Exits the program & shuts down Windows
Exits to Desktop
Displays system information, motion controller serial number, power cycles & version of software installed
In this state the controller is not running and the drives are disabled.
To start the controller press Press to Start.
This will take you to the Main Screen
Home Status This will flash a red error message until the machine is homed and in the case of 3 axis machines squared.
Status Pane Shows if any of the software or hard limits have been activated.
Flexi Shape Allows the operator to create shapes from the parts library within the controller.
Load Shape Allows the operator to load a shape from an external source, from either a memory stick or over a wired or wireless net work.
Scan and Nest (Optional includes simple CAD). Allows scanning of drawings into software to be cut and or edited. (requires camera).
Process Allows adjustment of gas pressures if required.
Jog Moves cutting torch to any point on the bed.
Manual Cut Used for removing scrap, point to point and strip cutting.
Configure Changes setting such as plasma ,type, homing, encoder
Exit Returns to previous screen.
Home routine Homes the machine and allows access to the preset table positions.
The machines will be fitted with a number of emergency stops. When operated the machine will stop and the cutting process will be interrupted. The red stop screen will appear barring any further input until the Emergency stop has been returned to a normal operating state. If necessary the exit controller button can be used to close down the software and return to the Windows desktop.
The machine should be homed before cutting commences. This will ensure the machine soft limits are operational and the axis have the correct alignment.
After pressing the home routine button the following screen will appear.
Use the Jog buttons to position the machine near the pre-set home points.
Press the Start routine button
The machine will find the home switch points, depending on the machine type the the home sequence should be as follows:
The plasma height sensing head will home
Home X axis
Home Y and YY axis
Apply square offset.
When the machine has homed all axes, the following screen will appear, with additional buttons revealed.
After this point you do not have to home the machine again unless you suspect the machine is out of square or you have exited the program.
There are 4 preset table positions ( set via the configuration screen) to move the torch to one of these, i.e. to unload, ensure the bed is clear of obstructions and select the desired table position. The machine will traverse to selected point.
The movement can be halted by pressing Stop.
Lost cut recovery
This feature retains the origin coordinates for the last few jobs cut. It is used if the machine is inadvertently shut down, or the job has been stopped before completion.
If there has been a power loss investigate the reason for this and the subsequent shut down of the system. Once satisfied the fault has been rectified restart the controller.
Carry out the home routine as normal.
Once the home routine is complete using the drop down control select the job required from the list.
Press the lost cut recovery button.
The machine will now move to the origin of the last plate cut.
From this point load the shape / nest as normal and advance around the pierce points / cut path to continue cutting. These functions will be explained in tsubsequent sections.
To exit the homing screen and return to the main screen press Exit
These are a series of pre defined shapes which can be dimensioned by the operator.
Press the Flexi Shape button.
Press the icon of the desired shape.
A picture of the selected shape will appear together with a series of prompts and a keypad.
Enter the required measurements using the keypad.
Other parameters include:-
Lead in – distance from pierce to cut path
Start position – position of pierce.
When all dimensions have been input the following screen or similar will be displayed.
From this screen it is possible to alter any mistakes or customise the shape further.
To change an overall dimension highlight the required value on the screen, the key pad will appear. Type in the new value, press ‘enter’. The value will displayed and the overall sketch will change to show new dimensions.
It is possible to alter each corner individually
Refer to the numbered buttons around the shape in this case 1 to 4 are the outer corners and 5 to 8 are the inner corners.
To modify the upper right corner press the dimension next to the number 1
The keypad will appear type in the desired dimension ie 25 mm
To alter the style of the corner press the corresponding corner style button this will toggle between outside radius, inside radius and chamfer
All corners can be modified individually to give maximum flexibility.
Once the shape is as desired press Next to move on to the preview screen
This screen shows a preview of the flexi shape or loaded part.
Rotates shape through -360 to 360 degrees.
Press rotate, the keypad will appear, type in value then press enter.
The preview will be modified and the value entered will appear in the box.
The scale multiplier makes the shape larger or smaller.
Press scale and enter the scale factor required, followed by enter. The preview will be updated.
Mirrors the shape around different axes. Pressing Mirror toggles between mirror X , mirror Y,mirror X &Y and No mirror. The mirror status is displayed below the button an the preview modified.
Certain shapes can be inter linked to make for more efficient cutting. This mode can be used to manually link 2 of the same shape together. This can be combined with standard row and column nesting, accessed via the process setup screen.
Cut one part
This feature allows a single part to be selected from a nest of parts and then cut or re nested. This is used when a part has been lost or damaged by subsequent processing. Simply selectCut one part and press the part required.
This allows the operator to load pre designed nests from an external source such as a memory stick or network.
From the main menu screen press Load shape.
A list of available files will be displayed.
Use up / down to select the required file, after a brief pause, a thumbnail will be generated. If this is the correct nest press select.
If the desired drive is not shown, press the change drive button and use the up / down button to highlight the required drive, then press select.
If there are many nests available to download, press the Sort button and type in the first few letters / numbers of the required nest and press enter. From the abridged list use up / down to highlight the required file and press select.
This will open the Preview screen – this operates in exactly the same way as described previously for the Flexi shape operations
Files are listed alpha numerically, selecting Numeric sort will toggle the list to file creation date.
Lists all drives that the computer can access, this will show all internal drives and any memory sticks or available networks.
If many nests are available for downloading, scrolling through the list can be time consuming. Pressing Sort will open an alpha numeric keyboard, part or all of the file name can then be typed in thus, narrowing the search.
Up and Down
Moves cursor through the available drives or files displayed on the screen.
Selects the required drive file highlighted on the screen.
Exits back to the main screen.
Directory & File name
Displays path and file selected.
Deletes selected file (this option may not be available in certain configurations)
Generates a “thumbnail” sketch of the nest . Please note if this button is pressed when a directory is selected it will generate previews for all the nests within that directory, which may take some time depending on the number of nests and their complexity.
The initial search path is defined within the configuration, if an alternative file path is regularly used, this path can be set to default as follows.
Press the Change drive button and use the up / down button to highlight the required drive, then press select.
A list of available directories will appear, use the up / down buttons to highlight the desired directory, then press Select. Pressing Make Default will complete the operation.
Setup Job screen
The procedure for cutting with plasma is the same for both flexi shapes and loaded shapes
The controller features an expert system, which will automatically set cutting speed, arc voltage, pierce height etc. As there are many factors that effect these settings – plate quality and type etc the operator can tailor these setting to suit the application and if required,save the settings permanently.
Press the buttons to select the current and material required, the system will hilight the relevant information in the cutting table and the consumable chart will change automatically.
Press the material thickness display and the keypad will appear, type in the thickness to be cut and press enter.
The information for the thickness will be highlighted and the cutting speed etc will be set automatically.
To add a different thickness or modify existing data.In this example information for 12mm material thickness will be addedIn the material thickness box enter 12 then press enter Press Save Data
At this point, if no changes are required simply press Next to proceed to the Cut screen.
This feature identifies round holes within a profile and automatically applies a predefined algorithm to improve the ’roundness’ of the hole and reduce the edge taper. The height sense is also frozen and cutting speed adjusted.
Pressing super hole will toggle the action on and off.
Once all changes have been made on the Set up Screen
Press next to move to the Origin Screen.
If required most parameters can be modified and set to replace the default settings. To do this press the save data button.
The screen shown above will appear, press the parameter to be changed, the keypad will appear, type in the new value and press enter.
Parameters that can be changed are:-
Speed – Cutting speed.
Kerf – Allowance for width of the process.
Plasma – Plasma gas pressure, for HPR systems only.
Shield – Shield gas pressure, for HPR systems only.
Preflow – preflow gas pressure, for HPR systems only.
Arc voltage – the arc voltage measured by the height sense (if fitted) the higher the value the larger the distance above the plate.
Cut height – the height above the plate that the height sense (if fitted) moves to once the arc is detected, prior to Arc voltage sensing activating.
Pierce height – The distance above the plate the height sense (if fitted) moves to prior to piercing. Generally twice the cut height.
Pierce delay (seconds) – Time machine waits before starting movement to allow plasma arc to pass through the plate.
Early Off (ms) – Time before end of cut path the plasma is turned off to prevent damage to end of part and increase consumable life.
Delay before AVC comes on – allows the arc to stabilise before arc sensing starts.
Raise on pierce mm – Raises the torch by the amount entered. This takes place just after the arc is established, prior to motion commencing. Raising the torch will reduce the amount of spatter hitting the torch and by setting the raise on pierce to x seconds will allow the torch to remain at the raised height before lowering to cut height, thus avoiding the molten spatter pool.
Raise on pierce for x seconds -This feature is used in conjunction with the raise on pierce mm parameter.
When all parameters are set press save
Saving Data will appear briefly on the screen to confirm the setting have been saved. The Set up screen will now reappear.
To discard changes press Next.
The controller has a row and column nesting facility built in, this can be used with all shapes, flexi or downloaded.
Press the Vertical and / or Horizontal boxes and type in the required quantities. The scrap allowance is used to adjust the distance between the components. Note the scrap allowance is in addition to the lead in line and can be set to a negative value to move parts closer together.
Once required number of parts are nested press Next to return to the setup screen.
Other options are:
Standard / Cut Inter component moves – Standard turns off cut between pierces so parts can be chain cut. Warning proceed with caution this function can only be used on parts with No internal cut outs.
Stagger – Gives better plate usage when cutting circles.
Mirror/ Rotate – Allows nest to be manipulated by rotating and mirroring.
Save Nest – if the nest is to be cut several times it can be saved to prevent having to re input it again. The nest is given a name and can then be reloaded from the saved nest directory on the C drive.
Zoom In /Out – Toggles Zoom mode. If the screen is touched the view will zoom in or out to view nest.
Redraw – Returns to original view.
Next – Returns to Setup page.
The plate align function allows the operator to take in to account if a plate is not parallel to the bed or rail.
Press the Plate Align Button
Follow the on screen instructions and press Done to go back to the setup screen.
This information will be retained until another plate alignment is carried out, allowing multiple nests to be cut from the same plate.
Note the plate align data will only be used on proceeding plates if the Plate align Button is pressed otherwise the plate will be cut with no angular correction.
Once all changes have been made on the Set up Screen press next to move to the Origin Screen.
The controller calculates the maximum area of the shape. The origin is the point that best defines the position of the cutting torch to the plate. When cutting nests from whole sheets this position will generally be the same each time, depending on machine configuration. However when cutting pieces from part plates it is sometimes easier to align to a good edge, from this position the machine will traverse to the first pierce point (optional centre origins are shown in this view).
Press the relevant origin to select it. This will move to the cut screen
The indicators and controls on the run screen have the following functions:
X & Y position indicator
Manual speed adjust + – speed
Speed indicator upper : program speed Lower indicator : running speed
Cycle Start/Stop : starts and stops the cutting process
Reverse : reverses the cutter around the cut path
Advance : advances the cutter around the cut path
To pierce / origin : the first press returns the cutter to the last pierce, the second press returns to the origin point of the nest.
Fwd / Rev : moves the cutter forward and reverse through the pierce points
Test / Cut mode select : switches between cut mode and test mode
Nest view / Zoom view : toggles between nest and zoom view, pressing the nu meric button increases the zoom level further
Limit status pane : shows the limit and cut status
Optional Arc Voltage pane
AVC on / off
Initial Height sense on / off
Manual raise / lower of the cutting head
Arc Voltage increase / decrease
Set Arc Volts : displays the programmed arc voltage
Actual Arc Volts : displays the actual arc voltage when cutting
Graphical display area
This shows the profile being cut. The black line is the original geometry, the white line is the cutter path. Internal lines are shown in blue, secondary processes are shown in purple.
The yellow rectangle represents the extents of the box.
The graphical display area is interactive and pressing the screen causes the view to zoom in, in certain modes pressing the screen selects a pierce point.
Cut Indicator :
In gas mode the gas on, hi preheat, and automatic / manual selection buttons are also displayed.
Reload Nest : reloads nest allowing the origin to be re selected
Reload Shape : returns to preview screen allowing the shape to be rotated etc & re nested.
Exit : clears shape memory and returns to main menu
If the plate is against a datum and the torch is correctly positioned, simply press the Test / Cut button to select cut mode, this will then go red indicating cut mode is selected.
Press Start, the machine will traverse to first pierce point and begin the cutting process. As the machine moves round the shape the cut path will go red.
When a part has been cut the pierce point will show as an orange dot as below.
Once the nest has been cut the end of cut screen will be displayed, the following choices can be selected:
Return to origin : select this to return to the origin of the part, usually used after the shape has been run in test mode, prior to selecting cut mode.
Jog off job : displays a jog panel allowing the cutter to be moved a set distance away from the job so it can be picked up.
Repeat : this displays a jog panel with four direction arrows indicating a repeat direction. The extents of the shape are measured and the correct repeat traverse distance is calculated and applied when a button is pressed.
Exit : this returns to the main menu screen and clears the shape memory.
If the nest is a very close fit to the plate it may be necessary to carry out a test run for example a dry run without the cutting process on.
Position torch on the start point as normal, select Test using the Cut / Test button
The machine will begin to move round the nest, the torch can be raised or lowered manually to help with alignment. In the example below if the nest is too far to the right press Stop.
Press the Jog button
Press the left direction button to move the torch back on to the plate.
Press Move Job to “reposition” the nest on the plate .
The other Jog functions will be covered in a later section.
Press Start to continue round the nest.
To speed up the process it is possible to skip through pierces. To do this press Stop followed by the Fwd / Rev button
The following Screen will appear
Press and hold the Advance button.
The cursor will initially move slowly through the pierce points then after 5 seconds increase speed.
When the required pierce is reached release the button, if the cursor overshoots the required pierce, briefly press the advance or reverse button until the correct point is reached.
Press the Jump to Pierce button the machine will now move to the selected pierce point.
Press Start, the machine will then continue around the shape.
Alternativley, pressing Enter pierce will display a numeric key pad allowing the pierce number to be input directly. Or
Press on the screen to select the part required, the yellow dot represents the first pierce point of each shape.
If any further positional adjustments are required follow the Jog / move Job procedure as described earlier.
Once the nest is positioned correctly press Stop
Press the To Pierce button – the machine will move to its last pierce point
The To Origin Button will now appear instead of the To Pierce button
Press this and the machine will return to its origin (which will now be offset by the Jog / Move Job operation)
To Cut the shape press the Test / Cut Button and press Start
Other Features of the cut screen:
Back Up is not often used in plasma cutting (unless the plasma does not have an arc sensing unit)
The speed can be adjusted at any time to take in to account the plate condition etc.
Nest view / Zoom View Allows operator to zoom in on the cursor.
Press to return to Nest view
What to do if :
The plasma stops cutting part way round a shape.
Most plasma systems have an arc on sense circuit so the machine will stop automatically shortly after the arc extinguished. In this state the head will have risen up.
Clear any debris etc that may have caused the arc to go out.
Position the torch close to the plate using the raise/ lower buttons.
Press and hold the reverse button, the machine will reverse round the shape, release the button just after the point at which the arc extinguished.
Note do not position the torch over an existing cut path as the arc needs metal beneath it to strike.
If the machine moves too far use the advance button to position it correctly
Raise the torch.
Press the Start Button the machine will continue cutting.
A stitch is required in the job.
Some times a stitch ( an uncut area on the nest ) is required to hold a part in the plate to prevent movement or ease unloading.
When the required point is reached press Stop.
Press and hold the advance button until the machine moves the required stitch distance.
Press Start the machine will continue cutting.
The Consumables blow part way round a plate
The machine should stop automatically, if it does not press stop.
Use the Jog buttons to move the machine to a position where the consumables can be changed.
Exchange the consumables.
Press back to path.
The machine will now move back to its original position.
Once there press Start to continue cutting. ( It may be necessary to use the Advance / Reversebuttons to pick up at the correct point)
Under no circumstances use the Cut back to Path feature as this will damage the Plate, this feature is used when gas cutting or if the plate being cut is too thick to pierce as it allows n edge start to be carried out.
I need to cut a part out of sequence.
During the cutting process, wait until the present shape is finished.
Press the Fwd / Rev button as described in the previous section to select the required part(remember the inner components of the parts are cut first).
Once the correct pierce is selected press Jump to pierce.
When the machine gets to position simply press Start.
The cutting sequence will begin again.
Once the part is cut you have the option to continue cutting to the end of the nest or returning to the point where you originally broke off cutting. Which ever option is chosen use the Fwd/Rev button again and jump to the required pierce, press Start and continue cutting.
Arc Voltage height sensing.
If the Controller is fitted with a Techserv Height Sensing Head the following controls will be available.
Initial Height sense on/off
Manual head/raise lower
Arc Voltage increase/decrease
Set Arc Volts
Actual Arc Volts(only displays a value when cutting)
The height sense uses two integrated systems:
Initial Height Sense IHS – when the cutting sequence is initiated the torch will drive down and touch the plate. This sends a signal back to the controller which then retracts the torch to the pierce height from the setup data.
Arc Voltage height sense Control AVC – This system measures the voltage created between the torch and the plate. The larger the voltage the greater the distance above the plate.
The system will start the arc at the pierce height as set by the IHS – once the plasma arc strikes an arc on signal is sent from the plasma, when the controller receives this it holds position for the preset pierce time, then commences motion. The torch will then drop to the cutting height.
When the machine reaches cutting speed the AVC will turn on and adjust the torch height to maintain the arc voltage.
As the machine slows to go round a corner the AVC will be turned off to prevent the torch diving in to the plate.
The machine will cut with either of the functions disabled – but the operator will have to adjust the torch position manually using the Raise Lower buttons.
Running in this mode for any length of time is not recommended.
Changing the AVC cutting height.
The Set voltage displayed is derived from the setup data, if it is necessary to adjust this value, press the +/- buttons to increase or decrease the set voltage when the machine is cutting and AVC is enabled
The actual voltage displayed will closely follow the set voltage.
Factors affecting the arc voltage are:
Cutting speed – if for some reason the speed is reduced the plasma will burn more material away, this increases the arc voltage causing the torch to run closer to or crash in to the plate.
If the speed is too fast the plasma will not penetrate the plate.
Material Type / Quality – different materials require varying arc voltages, ensure the correct material is selected during setup.
Rust and scale on the plate can effect the height sensing causing inconsistent operation.
Current – Ensure the plasma pack is set to the correct current value as defined during set up.
Consumable Wear – a badly worn consumable will cause the torch to cut closer to the plate, this is not normally an issue if consumables are changed at a sensible time.
NOTE: When adjusting the arc voltage settings it is recommended to carry out the changes in 1 volt steps.
The Precision Height Sense head is fitted with a breakaway device. This is designed to prevent torch damage caused by catching on tipped components during cutting or traversing. If activated the machine will stop movement and turn off the cutting process. A Limit Hit warning will appear on the cut control panel.
Cutting with Gas
Most of the main controls are the same as for gas as previously described for plasma.
If the machine has the optional automatic gas system fitted, it will automatically control the High and Low preheating oxygen pressure. Along with the cutting pierce ramp and cutting oxygen pressure.
On a gas only machine the above table will appear by default however on a combined Gas / Plasma machine the plasma screen appears first. Press the plasma / gas select field to toggle between the two processes.
As with the plasma process select the required plate thickness.
The thickness will be highlighted on the screen.
Cutting speed, preheat etc will be adjusted to automatically.
The Nest and Plate Align function work in the same manner as described in the plasma section.
If no changes are required press next to move to the origin screen.
Gas process data
To enter new data or edit existing press Save Data.
Turn on selected process
To adjust a pressure press Gas on and light torch and select at least 1 torch on the head select buttons.
To adjust a pressure ie High preheat oxygen Select oxy hi in the process set up pane .( The current pressure in bar and psi will be displayed).
Press the up/ down buttons to adjust the pressure.
To see the actual effect the adjustments are having press High preheat in the Test Gases Pane.
The pressure can be further adjusted, when desired results have been achieved press the gases off button.
Other variable settings are;
Kerf- allowance for thickness of cutting flame.
Preheat- Time in seconds machine turns on high preheat ( to speed up pierce time ) before turning on the cut.
Pierce Delay – Time in seconds the machine takes to accelerate to cutting speed whilst ramping cut pressure from low to high.
When all adjustments have been made press Save Settings.
The review screen will then appear.
If values are correct press save settings, this will return to the adjustment screen from there press next.
The Setup screen will reappear.
Press Next to move to the Origin Screen.
Select the required origin as per the plasma section.
To carry out a gas cut.
Position the torches on plate.
Select the torches required for cutting using the individual cut buttons.
Press Gas On button and light gases (adjust trim valves on torches if necessary).
Select Cut using the Test / Cut Button.
The machine will move to the pierce point turn on the high pre heat, wait for the time defined in the set up screen, then turn on the cut and move off round the shape.
This process will continue until all parts are cut.
Press Exit to return to the Main Screen.
The fwd / rev, jog and view functions all work as described in the Plasma section.
The other functions will be described in the following section.
What to do if the cut comes on but does not pierce the plate.
The plate was not hot enough when the cut turned on.
Press To Pierce – the machine will move back to the pierce point.
Press Start – the machine will restart its preheating cycle.
The same thing happens at the next pierce.
The preheat time is too short.
Whilst the machine is in the high preheat cycle press Hi preheat button. This will hold the preheat cycle on.
When the plate is hot enough press Hi Preheat button again – this will begin the cutting process.
The machine will then “remember” the new time for all following preheat cycles in the nest.
One of the torches blows out part way round a cut.
Press and hold the Backup button – the machine will slowly reverse round the cut path, when the torch reaches the position it blew out release the button.
The machine will then carry out a normal preheat/cut cycle and set off along the cut path.
The main difficulty arises when trying to pick up the cutting paths of the other torches. As the torches approach uncut metal press the Creep Speed Button this will reduce the cutting speed (to a creep) when the cuts re establish in the fresh metal press Creep Speed again -the machine will return to normal cut speed.
Pressing More jogs will cycle though the additional jog screens.
The relative jump screen is shown.
Tap the number fields and enter a relative distance to travel.
Pressing the do relative jog button will move the distances as input.
To move to a Table position press one of the Table positions.
Pressing the numeric display on the jog screen will cause the display to zero, making relative moves easier to measure.
Manual Cut – Plasma
This is useful for cutting Scrap and strip cutting
The settings on the screen will default to the last values to be cut.
If different settings are required, press set up and follow the procedure described in the cutting with plasma section.
Use the jog buttons to position the torch to the start position.
Press Cut – the machine will begin a cut cycle, immediately press the desired direction button.
When the plasma arcs up it will cut in the desired direction until either Stop is pressed or it runs out of material.
All arc voltage functions are the same as previously described.
Press Exit to return to the Main screen
Manual Cutting- Gas
Again the screen will default to the last setting being cut.
Press Gas on – light the torches.
Select heads as required.
Position torches on plate using the Jog buttons.
Press Cut, the machine will start a preheat / cut cycle.
Select the desired cut direction.
When the Preheat cycle finishes the machine will move in the desired direction until the stop button is pressed.
When finished turn gases off.
Press exit to return to main screen
The following screen is accessed by pressing in the bottom left corner of the main start screen.
This screen displays the state of the input and outputs can be selected by pressing the relevant buttons.
Additional diagnostic screens can be selected by pressing the buttons on the top right of the screen.
The machine configuration screen is accessed via a password. There are a number of settings selected via the tab buttons.