GP-LC-4X DPWM

PWM reference on the GP-LC-4X discrete pins using the output DMA.

blockType: SubSystem

Path in the library:

/RITM/RITMeX GP-LC-4X/GP-LC-4X DPWM

Description

The GP-LC-4X DPWM block is used to set PWM on the discrete pins of the GP-LC-4X using the output DMA.

The usage of GP-LC-4X DPWM loses the usage of GP-LC-4x DO on this I/O module even on unused channels.

When using the high-frequency periodic signal generation units on a particular analogue output channel of the RITMeX GP-LC-45 I/O module, it will no longer be possible to use other high-frequency periodic signal generation units on another channel of this module.

When changing the parameters of the signal at low frequencies (up to 1kHz), the change of the signal shape takes effect after 1-2 periods of this signal. When changing the parameters of the signal at high frequencies, the changes take effect not less than 1 ms and not more than 2 ms. The process of changing the waveform does not affect the TET of the unit.

Ports

Input

# Frequency, Hz — signal frequency for all involved discrete output channels
scalar

Details

Data types	`Float64`.
Complex numbers support	No

# RMS — PWM frequency in the form of an array, which must have a size equal to the number of channels used
vector

Details

The slowness refers to the ratio of the signal period to the pulse width.

Data types	`Float64`.
Complex numbers support	No

Parameters

All parameters listed above except the last three set the waveform only at initialisation. If at the first calculation step the corresponding parameters at the block inputs are different, the waveform will be changed.

Main group

# Частота (10-100000 Гц): — initial frequency of the signal for all involved discrete output channels

Details

Default value	`10`
Program usage name	`m_freq`
Tunable	No
Evaluatable	Yes

# Скважность: — initial PWM slope in the form of an array, which must have a size equal to the number of channels involved

Details

Default value	`[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]`
Program usage name	`m_phase`
Tunable	No
Evaluatable	Yes

# Стартовый канал: — the first discrete output channel to be used
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16

Details

Values	`1` \| `2` \| `3` \| `4` \| `5` \| `6` \| `7` \| `8` \| `9` \| `10` \| `11` \| `12` \| `13` \| `14` \| `15` \| `16`
Default value	`1`
Program usage name	`m_inich`
Tunable	No
Evaluatable	Yes

# Количество каналов (1-16): — number of discrete output channels involved

Details

Default value	`16`
Program usage name	`m_chnum`
Tunable	No
Evaluatable	Yes

# Номер модуля: — unique module identification
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8

Details

Used when more than one I/O module of the same type is installed in a real-time machine.

Values	`1` \| `2` \| `3` \| `4` \| `5` \| `6` \| `7` \| `8`
Default value	`1`
Program usage name	`m_devnum`
Tunable	No
Evaluatable	Yes

# Шаг расчета, с: — calculation step in seconds for sending counts to digital output channels from the real-time application

Details

Default value	`-1`
Program usage name	`m_smplT`
Tunable	No
Evaluatable	Yes