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mycnc:low_frequency_pulse_generator

Low-Frequency Pulse Generator

There are 4 low-frequency pulse timers in the system

Software PLC control

Address Variable Name Description
0x10000AB EXT_MYTIMER_SET Set up, enable/disable pulse generator
0x10000AC EXT_MYTIMER_SET_PULSE Set pulse time (in milliseconds)
0x10000AD EXT_MYTIMER_SET_PAUSE Set pause time (in milliseconds)

Pulse generator set up

Writing to the Software PLC register number 0x10000AB is used to set up Pulse generator.

  • Byte 0 of written value is the OUT port number for the pulse generator
  • Byte 2 - set the current state of the pulse generator. Bit #1 is to enable/disable the generator.
    • 0 - timer DISABLED
    • 2 - timer ENABLED
  • Byte 3 - timer number.

Software PLC example: set up and turn the generator ON

PULSES_ON.plc
#define port_num 8
#define t_pulse 200
#define t_pause 800
 
main()
{
 
  gvarset(0x10000ac,t_pulse);
  gvarset(0x10000ad,t_pause);
 
  x=port_num|(2<<16);
  gvarset(0x10000ab,x);
 
  exit(99);
 
};

Software PLC example: set up and turn the generator OFF

PULSES_OFF.plc
#define port_num 8
 
main()
{
  gvarset(0x10000ab,port_num);
  exit(99);
};

Hardware PLC control

Address Variable Name Description
8100 GVAR_TIMER0_ENABLED 0 - DISABLE; 1- ENABLE
8101 GVAR_TIMER0_PORT Set Output pin number for timer/generator 0
8102 GVAR_TIMER0_PULSE Set pulse time in milliseconds for timer/generator 0
8103 GVAR_TIMER0_PAUSE Set pause time in milliseconds for timer/generator 0
8104 GVAR_TIMER1_ENABLED 0 - DISABLE; 1- ENABLE
8105 GVAR_TIMER1_PORT Set Output pin number for timer/generator 1
8106 GVAR_TIMER1_PULSE Set pulse time in milliseconds for timer/generator 1
8107 GVAR_TIMER1_PAUSE Set pause time in milliseconds for timer/generator 1
8108 GVAR_TIMER2_ENABLED 0 - DISABLE; 1- ENABLE
8109 GVAR_TIMER2_PORT Set Output pin number for timer/generator 2
8110 GVAR_TIMER2_PULSE Set pulse time in milliseconds for timer/generator 2
8111 GVAR_TIMER2_PAUSE Set pause time in milliseconds for timer/generator 2
8112 GVAR_TIMER3_ENABLED 0 - DISABLE; 1- ENABLE
8113 GVAR_TIMER3_PORT Set Output pin number for timer/generator 3
8114 GVAR_TIMER3_PULSE Set pulse time in milliseconds for timer/generator 3
8115 GVAR_TIMER3_PAUSE Set pause time in milliseconds for timer/generator 3

Hardware PLC example: set up and turn the generator ON

M07.plc
#define port_num 8
#define t_pulse 200
#define t_pause 800
 
main()
{
 
  gvarset(8100,1);
  gvarset(8101,port_num);
  gvarset(8102,t_pulse);
  gvarset(8103,t_pause);
 
  exit(99);
 
};

Hardware PLC example: set up and turn the generator OFF

M09.plc
main()
{
  gvarset(8100,0);
  exit(99);
};
mycnc/low_frequency_pulse_generator.txt · Last modified: 2021/04/06 09:25 by ivan