IDEC MicroSmart User Manual
Page 349
20: P
ULSE
I
NSTRUCTIONS
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Sample Program: RAMP — Reversible Control Disabled
This program demonstrates a user program of the RAMP instruction to generate 10,000 pulses from output Q0.
Steady pulse frequency:
3,000 Hz
Initial pulse frequency:
1,000 Hz
Frequency change rate:
500 Hz / 10 ms
Reversible control enable:
Reversible control disabled
Preset value:
10,000 pulses total
Operand Settings
Operand
Function
Description
Allocation No. (Value)
S1+0
Operation mode
Frequency range 100 to 10,000 Hz
D0 (1)
S1+1
Steady pulse frequency
10,000 Hz
× 30% = 3,000 Hz
D1 (30)
S1+2
Initial pulse frequency
10,000 Hz
× 10% = 1,000 Hz
D2 (10)
S1+3
Frequency change rate
10,000 Hz
× 5% = 500 Hz
D3 (5)
S1+4
Reversible control enable
Reversible control disabled
D4 (0)
S1+5
Control direction
Not used (no effect)
D5
S1+6
Preset value (high word)
10,000
D6 (0)
S1+7
Preset value (low word)
D7 (10000)
S1+8
Current value (high word)
0 to 10,000
D8
S1+9
Current value (low word)
D9
S1+10
Error status
D10
D1+0
Pulse output ON
0: Pulse output OFF
1: Pulse output ON
M100
D1+1
Pulse output complete
0: Pulse output not complete
1: Pulse output complete
M101
D1+2
Pulse output status
0: Steady pulse output
1: Changing output pulse frequency
M102
D1+3
Pulse output over flow
0: Over flow not occurred
1: Over flow occurred
M103
M8120
M8120 is the initialize pulse special internal relay.
When the CPU star ts, seven MOV(W) instructions store parameters to
data registers D0 through D7.
D0 (operation mode): 1 (100 to 10,000 Hz)
D1 (steady pulse frequency): 30 (10,000 Hz
× 30% = 3,000 Hz)
D2 (initial pulse frequency): 10 (10,000 Hz
× 10% = 1,000 Hz)
D3 (frequency change rate): 5 (10,000 Hz
× 5% = 500 Hz)
D4 (reversible control enable): 0 (reversible control disabled)
D6 (preset value high word): 0
D7 (preset value low word): 10,000
When star t input I0 is turned on, RAMP star ts to generate 10,000 output
pulses.
I0
REP
S1 –
1
MOV(W)
D1 –
D0
REP
S1 –
30
MOV(W)
D1 –
D1
REP
S1 –
10
MOV(W)
D1 –
D2
REP
S1 –
5
MOV(W)
D1 –
D3
REP
S1 –
0
MOV(W)
D1 –
D4
D1
M100
RAMP
S1
D0
REP
S1 –
0
MOV(W)
D1 –
D6
REP
S1 –
10000
MOV(W)
D1 –
D7