15
Input/Output ASSIGNMENTS
“Management is getting people together to figure out how to transform inputs into outputs.”
- Clayton Christensen
Note: The actual pin numbers and
I/O
# will vary from one system to another.
Note: The physical pins are defined as either output or input. These are shown at the bottom of the
MACH configuration screens for Input and Output respectively.
If there is a conflict (an I/O # described below is already in use), then simply select any available
OUTPUT#
and change the configuration accordingly. Fill in the pin number that you use.
Pin
OUTPUT#
I/O
Active
Function
_____ OUTPUT#18 Out
High
Spindle lock solenoid
The following do not apply to all drives:
____ OUTPUT#19 Out
High
Servo Enable (for drives with this feature)
_____ OUTPUT#17 Out
High
PC (Proportional Control, industrial drives only)
_____ OUTPUT#12 Out
High
TL1(Torque Limit, industrial drives only)
_____ OUTPUT#20 Out
Low
Surrogate E-stop signal
Notes on the
OUTPUT#
:
*You will want to use the
Enable/Disable
feature of your servo drive (if it has this feature).
*Some drives output an alarm (E-stop) when they are disabled and some do not.
*If your drive can be disabled, you do not want your CNC to E-stop every time you disable the drive,
so this surrogate signal is provided to splice into the normal E-stop line from the drive.
*This signal only comes on when the drive is disabled so it can be used as a ‘temporary’ E- stop
signal to prevent the system from stopping while the drive is disabled.
*When the drive is enabled, this signal is OFF and the drive provides the E-stop signal and can E-
stop the CNC if there is a problem.
