IDEC microsmart pentra, Programming Manual

Page: 219 / 344

FT1A S
MART
A
XIS
U
SER
’
S
M
ANUAL
FT9Y-B1382 19-9
19: P
ULSE
O
UTPUT
I
NSTRUCTIONS
Settings

Device tab
1. Select instruction
This item selects the PWM instruction to use from PWM1, PWM2, PWM3, or PWM4.
The pulse output, pulse duty cycle (ON ratio), and enabling/disabling pulse counting varies based on the instruction.
2. S1 (source 1): Control register
S1 specifies the starting number for the data registers to use with the PWM1, PWM2, PWM3, or PWM4 instruction. 
Starting from the specified number, 7 continuous words of data registers are used. 
The range of available data register numbers is D0 to D993 and D1000 to D1993.
Note: The upper and lower data registers change according to the 32-bit data storage method specified. 
For details, see Chapter 5 "Special Functions" – "32-bit Data Storage Setting" in the FT1A Series Pro/Lite User's Manual.
3. S2 (source 2): Initialization input
S2 specifies the initialization input. When the initialization input S2 is turned on, the initial values configured in the WindLDR
PWM instruction dialog box, on the
Setting tab, are stored in the control registers. An external input (I0 to I35) (Note) or an
internal relay (M0 to M1277) can be specified.
When the initialization input is on, the initial values are written to the data registers with each scan. To only initialize the values
one time, use the initialization input in combination with the SOTU (single output up) instruction or the SOTD (single output
down) instruction.
Note: For the 40-I/O type, external inputs (I0 to I27) can be used.
1. 2. 3. 4.
Instruction Pulse output Pulse duty cycle (ON ratio) Enable/disable pulse counting
PWM1 Q14
1 to 100% (increments of 1%)
Pulse counting can be enabled or disabled
(Pulse counting range: 1 to 100,000,000)
PWM2 Q15
PWM3 Q16 1 to 100% (1 to 50 Hz: increments of 1%,
51 to 1000 Hz: increments of (pulse
frequency ÷ 50)%)
Disable pulse counting
PWM4 Q17
Storage
destination
Function Setting Reference
Starting 0 Output pulse frequency 1 to 1,000 (increments of 1 Hz)
"5. Output pulse frequency" on page
19-10
Starting 1 Pulse duty cycle (ON ratio) 1 to 100% "6. Pulse width ratio" on page 19-10
Starting 2 Preset value (high word) (Note)
1 to 100,000,000 pulses "8. Preset value" on page 19-11
Starting 3 Preset value (low word) (Note)
Starting 4 Current value (high word) (Note)
1 to 100,000,000 pulses "9. Current value" on page 19-11
Starting 5 Current value (low word) (Note)
Starting 6 Error status 0 to 4 "10. Error status" on page 19-11