This function block is primarily intended for ProportionalValveControl library's internal use.
Supported platforms: CODESYS 2.3, CODESYS 3.5
This function block scales the control signal value to the PWM percent with given parameters.
When i_Control is 0, o_PwmReq output value corresponds to i_CenterPositionPwmLevel value.
If i_Enable is false, o_ValveSupply output is false and o_PwmReq is 0, otherwise o_ValveSupply is true and o_PwmReq value calculated.
o_PwmReq output value is calculated based on scale factors read from Global G_AD_Scale array provided by the hardware specific library.
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This function block is primarily intended for ProportionalValveControl library's internal use. |
Input variable name |
Data type |
Range |
Description |
i_Enable |
BOOL |
FALSE/TRUE |
Enables the outputs |
i_Control |
INT |
-32768..32767 |
Control signal to be scaled |
i_PosDirMaxPwmLevel |
UINT |
0..1000 (0,1%) |
Maximum PWM percent for positive direction,1000 = 100,0% |
i_PosDirMinPwmLevel |
UINT |
0..1000 (0,1%) |
Minimum PWM percent for positive direction,1000 = 100,0% |
i_CenterPositionPwmLevel |
UINT |
0..1000 (0,1%) |
PWM percent for center position (i.e. zero position),1000 = 100,0% |
i_NegDirMinPwmLevel |
UINT |
0..1000 (0,1%) |
Minimum PWM percent for negative direction,1000 = 100,0% |
i_NegDirMaxPwmLevel |
UINT |
0..1000 (0,1%) |
Maximum PWM percent for negative direction,1000 = 100,0% |
Input variable name |
Data type |
Range |
Description |
i_Enable |
BOOL |
FALSE/TRUE |
Enables the outputs |
i_Control |
INT |
-32768..32767 |
Control signal to be scaled |
i_PosDirMaxPwmLevel |
UINT |
0..1000 (0,1%) |
Maximum PWM percent for positive direction,1000 = 100,0% |
i_PosDirMinPwmLevel |
UINT |
0..1000 (0,1%) |
Minimum PWM percent for positive direction,1000 = 100,0% |
i_CenterPositionPwmLevel |
UINT |
0..1000 (0,1%) |
PWM percent for center position (i.e. zero position),1000 = 100,0% |
i_NegDirMinPwmLevel |
UINT |
0..1000 (0,1%) |
Minimum PWM percent for negative direction,1000 = 100,0% |
i_NegDirMaxPwmLevel |
UINT |
0..1000 (0,1%) |
Maximum PWM percent for negative direction,1000 = 100,0% |
i_PWM_Maximum |
UINT |
|
PWM maximum value for scaling. |
Output variable name |
Data type |
Range |
Description |
o_ValveSupply |
BOOL |
FALSE/TRUE |
Control condition for valve supply volt output |
o_PwmReq |
UINT |
Hardware specific |
PWM request for voltage valve, range/scale is hardware specific. |
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Source file Topic000335.htm
Last updated 24-Apr-2025