MASSO supports a series of alarms that are displayed on the screen to alert you for system related issues. These system alarms are an integrated part of the controller, they help you diagnose problems and at the same time help your machine safely.

1. Alarms on CNC Machine
By: Hind Technology

2. Controller Alarms
MASSO supports a series of alarms that
are displayed on the screen to alert you for
system related issues. These system
alarms are an integrated part of the
controller. They help you diagnose
problems and at the same time help your
machine safely.
Let’s see all the different alarms, what
triggers them, and how to clear them in
these easy to follow steps.

3. E-STOP ALARM
When the MASSO boots up,
the E-Stop Alarm flashes on
the screen.
For safety reasons, we need
to confirm that the E-stop
button is working and MASSO
requests you to press the E-
Stop and test the button.

4. E-STOP ALARM - How to clear this alarm?
STEP 1: Simply press the E-
stop button if already not
pressed, next MASSO will ask
you to release the button to
clear the E-stop alarm.
STEP 2: E-stop alarm is also
displayed on the screen when
the E-stop button is pressed.

5. HOMING ALARM
This alarm basically tells you
that the controller does not
know the position of the axis
and it needs to home the axis.
To clear this alarm, you need
to home the machine.

6. HOMING ALARM - How to clear this alarm?
STEP 1: Press ctrl + alt +
home. Once homing is
completed, the alarm will be
cleared.

7. DOOR ALARM
This alarm is displayed on the
screen when the machine
door is in the open position.
While the door is open, no G-
codes can be run on the
machine and manual JOG
can be done.

8. DOOR ALARM - How to clear this alarm?
STEP 1: If already not setup
then go to the F1 screen, then
into the inputs list. Move
down to any of the free inputs,
then select the door sensor
input.

9. DOOR ALARM - How to clear this alarm?
STEP 2: Next, wire up the
door sensor signal on this
input.
STEP 3: Opening and closing
the door will activate or
deactivate this alarm.

10. SOFT LIMIT ALARM
Once enabled and properly
configured, this alarm will
prevent over travel to all axis
on the machine.
For soft limits to work
properly, make sure they are
properly set up.

11. SOFT LIMIT ALARM - How to clear this alarm?
STEP 1: Go to the F1 screen
then to the general
settings. Make sure
the disable soft limits
option is not checked.
If this option is disabled, the
soft limits won’t work.

12. SOFT LIMIT ALARM - How to clear this alarm?
STEP 2: Make sure that
when you do the calibration
for each axis, the minimum
and the maximum travel of
each axis is defined as per
your machine travel.
This is the value that is used
internally for soft limits.

13. SOFT LIMIT ALARM - How to clear this alarm?
STEP 3: To clear this alarm
you need to give a valid G-
code command and that can
be any motion command or
any G or M codes.

14. From version 3.25, these
alarms are triggered by the
homing sensors or switches
if during motion the system
over travels due to
mechanical or electrical
issues.
HARD LIMIT ALARM

15. THE SYSTEM WILL:
 Display an alarm on the
screen telling you which axis
caused the alarm
 Stop the spindle
 Put the system in feed hold
HARD LIMIT ALARM

16. STEP 1: To clear this alarm, first
check what caused this alarm.
Either the settings on the system
or something mechanically might
be wrong.
STEP 2: Once the issue has
been fixed, you simply press ctrl
+ alt + home to home the
machine and clear the alarm
HARD LIMIT ALARM - How to clear this alarm?

17. PROBE ALARM
While probing, you can get
alarms in two conditions:
1.) When you do a probing cycle
and you ask the axis to move a
certain distance and the probe is
not triggered within this motion
2.) If your probe is already
touching the work piece

18. PROBE ALARM - How to clear this alarm?
STEP 1: Enter a valid G-
Code command. Generally a
G0 or G1 motion command
will clear this alarm.

19. This is displayed when you try
to load a tool that is not
supported by MASSO.
MASSO supports 32 tools from
tool number 0 to tool
number 31. If the requested tool
number is beyond this limit, an
alarm will be displayed.
TOOL ERROR ALARM

20. STEP 1: To clear tool error
alarms, enter any valid G-
code command
TOOL ERROR ALARM - How to clear this alarm?

21. This alarm is triggered by the
stepper or servo motor drives
when they go into any fault
condition.
The fault can be caused either
by any electrical issue or the
motor might be stuck.
MOTOR DRIVE ALARM

22. As soon as MASSO receives
this signal, it will:
 Put the system into feed
hold
 Stop the spindle
MOTOR DRIVE ALARM

23. STEP 1: Go to the F1 screen
and use any of the free inputs.
Assign Motor Alarm Input from
the list. If any of those motors
give any alarm, the system will
go into feed hold and display a
message on the screen.
MOTOR DRIVE ALARM - How to clear this alarm?

24. STEP 2: To clear this alarm,
we first need to find the issue
that caused the alarm.
It can be an electrical or
mechanical issue. Once it’s
fixed, press ctrl + alt +
home to home the machine.
MOTOR DRIVE ALARM - How to clear this alarm?

25. On machines where you have
lubrication system to lubricate
your slides, the system often
has switches/sensors to trigger
when the lubricant goes low.
Those switches or sensors
output can be connected to
the MASSO.
LUBRICANT LOW ALARM

26. STEP 1: Go to the F1 screen
and use any of the free inputs
and assign it as Lubricant
Low Alarm input. Now wire
the lubricant level sensor to
this input.
LUBRICANT LOW ALARM - How to clear this alarm?

27. STEP 2: This alarm will
display a message on the
screen and it won’t stop any
motion. However, it will still
display an alarm to alert you
that the oil level has gone low.
LUBRICANT LOW ALARM - How to clear this alarm?

28. STEP 3: Once the lubrication
tank has been refilled and
the signal goes away, this
alarm will automatically clear.
LUBRICANT LOW ALARM - How to clear this alarm?

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