CODESYS helps you to configure your RevPi DIO/DI/DO.
-
- Double-click on RevPi DIO/DI/DO in the CODESYS device tree.
- Navigate to the first tab Module Parameters.
- Set the desired values in the Value column.
Configuration values of the RevPi DIO
Configuration values of the RevPi DO
Configuration values of the RevPi DI
Description of the configurable values of RevPi DIO/DI/DO
In the following you will find a detailed description of the areas Inputs, Outputs, Memory, Counter, Encoder and PWM.
Input
In the input area you can make settings for all parameters your RevPi module receives, e.g. values of a temperature sensor.
|
Name |
Data type |
Number |
Offset |
RevPi DIO |
RevPi DI |
RevPi DO |
Description |
|
Input |
WORD |
1 |
0 |
X |
X |
|
Current values at the inputs. Bits 0 – 15 (DI) or 0-13 (DIO) show the current values of inputs 1 – 16 (DI) or 1-14 (DIO). |
|
Output Status |
WORD |
1 |
2 |
X |
|
X |
Bit-coded status of the outputs. Bits 0 – 15 (DO) or 0-13 (DIO) indicate the current error state of outputs 1 – 16 (DO) or 1-14 (DIO). 1: Output error (Switch-off due to overtemperature, overload..). 0: no error |
|
Status |
WORD |
1 |
4 |
X |
X |
X |
Module status NOTE: Values of bit 0-7 are valid only for RevPi DIO and DI. These bits are not assigned for RevPi DO, since this module has no input ICs. Bit 0: No communication to the input IC. Bit 1: UV1* on input 1 – 8 Bit 2: UV2* on input 1 – 8 Bit 3: Overtemperature** on input 1 – 8 Bit 4: UV1* on input 9 – 16 Bit 5: UV2* on input 9 – 16 Bit 6: Overtemperature** on input 9 – 16 Bit 7: Error prompt of the input IC NOTE: Values of bit 8-16 are valid only for RevPi DIO and DO. For RevPi DI, these bits are not occupied because the module has no output ICs. Bit 8: No communication to the output IC. Bit 9: CRC error on output IC. Bit 10: Error message of the output IC. Bit 11 – 15: undefined |
|
Counter |
DINT |
16 |
6 |
X |
X |
|
Current values of the counter or encoder function. |
UV1: The supply voltage for the input ICs has dropped below 7 volts. The alarm is canceled when the supply voltage rises above 9 volts again.
UV2: The supply voltage for the input ICs has dropped below 14 volts. The alarm is canceled when the supply voltage rises above 16.5 volts again.
Channels 1-8 and 9-16 have separate bits for UV1 and UV 2 because there are two individual ICs in the module that generate this signal. However, the voltage is always identical on both ICs. Therefore, both ICs set their error bit in UV1 or UV2.
** The input ICs signal an overtemperature alarm when 135 °C is exceeded.
Output
In the output section you can configure settings for all process values sent by your RevPi module.
|
Name |
Data type |
Number |
Offset |
RevPi DIO |
RevPi DI |
RevPi DO |
Description |
|
Output |
WORD |
1 |
70 |
X |
|
X |
Current values at the outputs. Bits 0 – 15 (DO) or 0-13 (DIO) indicate the current values of outputs 1 – 16 (DO) or 1-14 (DIO). |
|
PWM |
USINT |
16 |
72 |
X |
|
X |
Current PWM values in % for outputs 1 – 16 (DO) or 1-14 (DIO). |
Memory
In the Memory area you can define how the individual inputs are to be evaluated and how the outputs are to be set.
|
Name |
Data type |
Number |
Offset |
RevPi DIO |
RevPi DI |
RevPi DO |
Description |
|
InputMode |
BYTE |
16 |
88 |
X |
X |
|
Select the mode for each input. Direct: The current value of the input can be retrieved. Counter, rising edge: Rising edges are counted at the input. Counter, falling edge: Falling edges are counted at the input. Encoder: This input is used for encoder function. NOTE: Two inputs required for encoder function (see section „Encoder“). |
|
InputDebounce |
WORD |
1 |
104 |
x |
x |
|
This is where a time for the debounce filter is specified for all inputs. This time indicates when a changing state at the input is considered stable. Possible values are Off, 25 µs, 750 µs and 3 ms. |
|
OutputPushPull |
WORD |
1 |
106 |
X |
|
X |
Specifies whether the outputs are operated in push-pull or highside mode. |
|
OutputOpenLoadDetect |
WORD |
1 |
108 |
X |
|
X |
Specifies whether open-load detection is enabled for the outputs. |
|
OutputPWMActive |
WORD |
1 |
110 |
X |
|
X |
Specifies whether PWM is enabled for the outputs. |
|
OutputPWMFrequency |
BYTE |
1 |
112 |
X |
|
X |
This is where, for all outputs that are to be operated in PWM mode, the frequency at which the PWM signal is to be generated is specified. In general: The higher the frequency, the higher the step size in which the clock ratio can be set. |
Counter
You can optionally switch on a counter function for each of the 14 inputs. You can, for example, count the number of times a turnstile or a key has been pressed.
You can find an example of this in our video tutorials.
For each counter, a 32 bit value is then available in the process image.
The current counter value is returned as signed 32 bit value.
Encoder
You can configure all inputs as encoders. The PWM function is helpful if you want to, e.g., control parts of quantities. You can use it to regulate a water supply or dim lights.
You can use a maximum of five encoders.
For each encoder you need two inputs. You must always use the inputs in pairs, e.g.:
Input 1 and 2,
Input 3 and 4
…
Input 13 and 14 (or input 15 and 16 for RevPi DI)
It is important that you always apply the first encoder channel to an odd input. Otherwise your encoder will not be recognized.
The current encoder value is returned as signed 32 bit value for the first channel.
PWM
You can switch on an optional PWM function for each of the 14 outputs.
The PWM function is helpful if you want to, e.g., control parts of quantities. You can use it to regulate a water supply or dim lights.
If PWM is switched on, a whole byte value from 0 to 100 is transmitted instead of one bit per channel, which defines the pulse width at the output as a percentage. By configuration, one of the following PWM frequencies can be set for each module:
|
PWM frequency |
Resolution of the smallest increment in percent (step size) |
|
40 Hz |
1 % |
|
80 Hz |
2 % |
|
160 Hz |
4 % |
|
200 Hz |
5 % |
|
400 Hz |
10 % |
The current step size in % is set via an unsigned 8 bit value.