Kit I2C Input card 8 Bit
Kit I2C digital input board 8-bit with optocoupler and latch
All components including the PCB
All prices include Tax plus shipping costs
Delivery time 3-5 working days germany / about 10 days Europe.
Price changes and errors excepted.
Description:
The inputs are galvanically isolated by optocoupler 4-fold from the "rest of the world".
The adjustment to your input voltage is done using resistors that you can choose above.
The input cards have a memory for short input signals. A programmable logic device (GAL 20V8) stops short input signals firmly until they are picked up via the I2C bus from the PCF 8574. Via a jumper to the memory also turn "transparent" but.
The INT signal from the PCF 8574 signaled a change to the inputs with a low signal. This signal, we have performed an LED and separated by a transistor stage from other input cards.
The INT signals from multiple input cards can be just like the I2C signals SCL and SDA are connected in parallel. About our I2C-RS232 coupler you can check now if at a command card something has changed and only then read the cards one by one.
Size of the circuit board 75x 100 mm
Links:
For more information and program examples, refer to the product page I2C-Eingabekarte mit Optokoppler
Downloads:
Partlist:
1 | circuit board I2E-PL |
8 | Resistor for optocoupler Please select a value |
9 | Resistor 1,5 kOhm |
2 | Resistor 4,7 kOhm |
2 | Resistor 10 kOhm |
1 | Resistor network 8 x 4,7 kOhm |
8 | LED-Low Current 3mm green |
1 | LED-Low Current 3mm red |
1 | Ceramic Capacitor 100 nF |
1 | terminal 5 pin |
2 | terminal 8 pin |
2 | terminal 2 pin |
1 | PCF 8574 or PCF 8574A Please select PCF-Type |
1 | IC socket 16 pin |
1 | GAL-20V8 programmed (I2E-GAL) |
1 | IC socket 24 pin |
2 | 4fach optocoupler |
2 | IC socket 16 pin |
4 | pin connectors 3 pol and Jumper |
2 | Transistor BC546 |
Specific References
- EAN13
- 4260404260561
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