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Laser PPI

Under development. Adds 3 M-codes for controlling PPI (Pulse Per Inch) mode for lasers.

  • M112 P- turns PPI mode on or off. The P-word specifies the mode. 0 = off, 1 = on.

  • M113 P- The P-word specifies the PPI value. Default value on startup is 600.

  • M114 P- The P-word specifies the pulse length in microseconds. Default value on startup is 1500.

NOTE: These M-codes are not standard and may change in a later release.

A description of what PPI is and how it works can be found here.

I have a customized version of ioSender that I use for my CO2-laser, this has not yet been published but I may do so if this is of interest.

Dependencies:

Driver must support pulsing spindle on pin. Only for processors having a FPU that can be used in an interrupt context.

Laser coolant

Under development. Adds one M-code for controlling (tube) coolant.

  • M115 P- <Q>- <R>- turns coolant modes on or off.

The P-word specifies coolant mode. 0 = off, 1 = on. If a flow detector is connected then the Q-word is a delay in seconds to wait before checking flow is ok. If a temperature sensor is connected then the R-word specifies the upper temperature limit before an alarm is generated, set to 0 to disable monitoring.

NOTE: This M-code is not standard and may change in a later release.

M115 example:

M115 P1 Q2 R30 (switch on coolant, wait for two seconds before verifying flow is ok and set monitoring threshold to 30 deg. Celsius)

Dependencies:

Driver must have at least one ioports port available for turning coolant on/off. Additional ports are required for coolant ok and temperature input in order to enable use of the Q and R words.

2020-10-18