IFM Electronic Ecomat Mobile Series System Manual page 171

PWM in the ecomatmobile controller
A current measurement for the initialised PWM channel can be implemented:
•
via the function OUTPUT_CURRENT (→ page 176)
•
or for example using the
DITHER is called once for each channel during initialisation of the application program. When doing
so, input INIT must be set to TRUE. During initialisation, the value FREQUENCY for determining the
dither frequency and the dither value (VALUE) are transmitted.
Info
The parameters DITHER_FREQUENCY and DITHER_VALUE can be individually set for each channel.
Parameters of the function inputs
Name
INIT
FREQUENCY
CHANNEL
VALUE
CHANGE
DITHER_VALUE
DITHER_FREQUENCY
ifm System Manual ecomatmobile
ifm unit EC2049 (series element for current measurement).
Data type Description
BOOL TRUE (in the 1st cycle):
FALSE: during cyclical processing of the program
WORD PWM frequency in [Hz]
BYTE Current PWM channel / output
BYTE Current PWM value
BOOL TRUE: new PWM value is adopted
FALSE: the changed PWM value has no influence on the
output
BYTE Amplitude of the dither value in [%]
WORD Dither frequency in [Hz]
SmartController (CR2500) V05
PWM1000 is initialised
PWM signal processing
171