This library is developed for Industrial shields Raspberry PLCs and is only supported by Python3. It performs the following functions:
- Analog Read
- Analog write
- Digital Read
- Digital write
- Relay
To install this library, You need to first clone this repository to your PLC using the following command:
$git clone -b <tagname> https://github.com/Industrial-Shields/rpiplc-python3-lib
tagname = v1.X.X = RPI PLC Version 3
tagname = v2.X.X = RPI PLC Version 4
You can find the available tags here: https://github.com/Industrial-Shields/rpiplc-python3-lib/tags
After which, run the following command to install the library:
$python3 setup.py install
You can find the file here:
/boot/config.txt
Reboot the PLC once done.
#dtoverlay=mcp23017,noints,mcp23008,addr=0x20
#dtoverlay=mcp23017,noints,mcp23008,addr=0x21
#dtoverlay=i2c-pwm-pca9685a,addr=0x40
#dtoverlay=i2c-pwm-pca9685a,addr=0x41
#dtoverlay=ads1015,addr=0x48
#dtparam=cha_enable=true,cha_gain=1
#dtparam=chb_enable=true,chb_gain=1
#dtparam=chc_enable=true,chc_gain=1
#dtparam=chd_enable=true,chd_gain=
#dtoverlay=ads1015,addr=0x49
#dtparam=cha_enable=true,cha_gain=1
#dtparam=chb_enable=true,chb_gain=1
#dtparam=chc_enable=true,chc_gain=1
#dtparam=chd_enable=true,chd_gain=1
#dtoverlay=ads1015,addr=0x4a
#dtparam=cha_enable=true,cha_gain=1
#dtparam=chb_enable=true,chb_gain=1
#dtparam=chc_enable=true,chc_gain=1
#dtparam=chd_enable=true,chd_gain=1
#dtoverlay=ads1015,addr=0x4b
#dtparam=cha_enable=true,cha_gain=1
#dtparam=chb_enable=true,chb_gain=1
#dtparam=chc_enable=true,chc_gain=1
#dtparam=chd_enable=true,chd_gain=1
PLC initialization
rpiplc.init("RPIPLC_57R")
You can choose from the below model list to fill the parameter. PLC Model list:
- RPIPLC_19R
- RPIPLC_21
- RPIPLC_38AR
- RPIPLC_38R
- RPIPLC_42
- RPIPLC_50RRA
- RPIPLC_53ARR
- RPIPLC_54ARA
- RPIPLC_57AAR
- RPIPLC_57R
- RPIPLC_58
Pin initialization: It is a good practice to initialize the pins as inputs or outpust, for this use the following code:
pin_mode(pin_name, mode) # mode can be rpiplc.OUTPUT ;rpiplc.INPUT or 1 ; 0
Pin Functions: analog_read()
rpiplc.analog_read("I0.2")
analog_write()
rpiplc.analog_write("A0.0",value) # Here the value is in the range of 0 to 4095. 0 being 0V and 4095 is 10v
digital_read()
rpiplc.digital_read("I0.0")
digital_write()
rpiplc.digital_write("Q0.0",rpiplc.HIGH)
relay()
rpiplc.digital_write("R0.1",rpiplc.HIGH)
from rpiplc_lib import rpiplc
def digital_read_write():
rpiplc.pin_mode("I0.0",rpiplc.INPUT)
read_value=rpiplc.digital_read("I0.0")
print("The I0.0 is reading: {}".format(read_value))
rpiplc.pin_mode("Q0.0",rpiplc.OUTPUT)
rpiplc.digital_write("Q0.0",rpiplc.HIGH)
rpiplc.delay(1000)
rpiplc.digital_write("Q0.0",rpiplc.LOW)
rpiplc.delay(1000)
def analog_read_write():
rpiplc.pin_mode("I0.2",rpiplc.INPUT)
read_value=rpiplc.analog_read("I0.2") # 0 - 2047
print("The I0.2 is reading: {}".format(read_value))
rpiplc.pin_mode("A0.0",rpiplc.OUTPUT)
rpiplc.analog_write("A0.0",1024) # 2.5v Output
rpiplc.delay(2000)
rpiplc.analog_write("A0.0",4095) # 10v Output
rpiplc.delay(2000)
rpiplc.analog_write("A0.0",0)
def relay_test():
rpiplc.pin_mode("R0.1",rpiplc.OUTPUT)
rpiplc.digital_write("R0.1",rpiplc.HIGH)
rpiplc.delay(1000)
rpiplc.digital_write("R0.1",rpiplc.LOW)
rpiplc.delay(1000)
def main():
rpiplc.init("RPIPLC_57R")
while True:
digital_read_write()
analog_read_write()
relay_test()
if __name__ == "__main__":
main()
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent