キーエンス　KV5000 KV-LE21Vとラズベリーパイ イーサネット上位通信

#KV5000上位リンク   PYTHON

import socket

class MySocket:

def __init__(self, sock=None):

print('init')

if sock is None:

self.sock = socket.socket(

socket.AF_INET, socket.SOCK_STREAM)

else:

self.sock = sock

def connect(self, host, port):

print('connect')

try:

self.sock.connect((host, port))

return 0

except socket.error:

print('ソケットエラーです')

return -1

def mysend(self, msg):

print('mysend')

self.sock.send(msg.encode('utf-8'))

def myreceive(self):

print('myreceive')         data=[]

data=(self.sock.recv(1024))

#        print(data)

return data

#-----------------------------------------------------

def main():

host='192.168.1.4'

port=8501

myapp = MySocket()

ret=myapp.connect(host,port)

#1ワードの読み出し　16ビット符号有り

if ret==0:

cmd='RDS '

myapp.mysend(cmd+'DM00000.S 4'+'\r')

ret=[]

count=4

ret=myapp.myreceive().decode('utf-8')

#        print(ret)

datanum=[]

anser=ret[0:2]

if anser!='E1':

for i in range(0,count):

start=7*i

end=7*i+6

data=(int(ret[start:end],10))

if data>=32767:

data=data-65536

datanum.append(data)

print(str(datanum[i]))

#1ワードの読み出し　16ビット符号無し

#    myapp.connect(host,port)

cmd='RDS '

myapp.mysend(cmd+'DM0000.U 4'+'\r')

count=4     ret=[]

ret=myapp.myreceive().decode('utf-8')

#    print(ret)

datanum=[]

anser=ret[0:2]

if anser!='E1':

for i in range(0,count):

start=6*i

end=6*i+5

data=(int(ret[start:end],10))

datanum.append(data)

print(str(datanum[i]))

#1ワードの読み出し　32ビット符号無し

#    myapp.connect(host,port)

cmd='RDS '

myapp.mysend(cmd+'D0000.D 2'+'\r\n')

count=2     ret=[]

ret=myapp.myreceive().decode('utf-8')

datanum=[]

anser=ret[0:2]

if anser!='E1':

for i in range(0,count):

start=11*i

end=11*i+10

data=(int(ret[start:end],10))

datanum.append(data)

print(data)

if __name__ == '__main__':

main()

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