キーエンス KV5000 KV-LE21Vとラズベリーパイの
イーサネットMCプロトコル通信
KV-LE21V マニュアル参照
下記サンプルコードのパラメーター
| サブヘッダ | subheader='5000' |
| ネットワーク番号 | net='00' |
| PC番号 | pc='FF' |
| 要求先ユニットIO番号 | unitio='03FF' |
| 要求先ユニット局番号 | unitno='00' |
| 要求データ長 | nlen='0018' |
| CPU監視タイマー | cputimer='0010' |
| コマンド | command='0401' |
| サブコマンド | subcommand='0000' |
| 要求デバイス | device='D*000000' |
| 要求点数 | number='0002' |
| IPアドレス ユニットエディタで決めておく | host='192.168.1.4' |
| ポート番号 ユニットエディタで決めておく | port=5000 |
| #KV5000MCプロトコル 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('コネクトエラーです') |
| 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=5000 |
| myapp = MySocket() |
| connect_status=myapp.connect(host,port) |
| #ワードの読み出し 16ビット符号有り |
| if connect_status==0: |
| subheader='5000' |
| net='00' |
| pc='FF' |
| unitio='03FF' |
| unitno='00' |
| nlen='0018' |
| cputimer='0010' |
| command='0401' |
| subcommand='0000' |
| device='D*000000' |
| number='0002' |
| cmd=subheader+net+pc+unitio+unitno+nlen+cputimer+command+subcommand+device+number |
| myapp.mysend(cmd) |
|
count=2 ret=[] anser=[] |
| ret=myapp.myreceive().decode('utf-8') |
| datanum=[] |
| anser=ret[18:22] |
| if anser=='0000': |
| for i in range(0,count): |
| start=4*i+22 |
| end=4*i+4+22 |
| data=(int(ret[start:end],16)) |
| if data>=32767: |
| data=data-65536 |
| datanum.append(data) |
| print(str(datanum[i])) |
| #ワードの読み出し 16ビット符号無し |
| if connect_status==0: |
| subheader='5000' |
| net='00' |
| pc='FF' |
| unitio='03FF' |
| unitno='00' |
| nlen='0018' |
| cputimer='0010' |
| command='0401' |
| subcommand='0000' |
| device='D*000000' |
| number='0002' |
| cmd=subheader+net+pc+unitio+unitno+nlen+cputimer+command+subcommand+device+number |
| myapp.mysend(cmd) |
|
ret=[] anser=[] |
|
count=2 |
| ret=myapp.myreceive().decode('utf-8') |
| datanum=[] |
| anser=ret[18:22] |
| if anser=='0000': |
| for i in range(0,count): |
| start=4*i+22 |
| end=4*i+4+22 |
| data=(int(ret[start:end],16)) |
| datanum.append(data) |
| print(str(datanum[i])) |
| #ワードの読み出し 32ビット符号無し |
| if connect_status==0: |
| subheader='5000' |
| net='00' |
| pc='FF' |
| unitio='03FF' |
| unitno='00' |
| nlen='0018' |
| cputimer='0010' |
| command='0401' |
| subcommand='0000' |
| device='D*000000' |
| number='0004' |
| cmd=subheader+net+pc+unitio+unitno+nlen+cputimer+command+subcommand+device+number |
| myapp.mysend(cmd) |
|
ret=[] anser=[] |
| count=2*2 |
| ret=myapp.myreceive().decode('utf-8') |
|
datanum=[] |
| anser=ret[18:22] |
| if anser=='0000': |
| for i in range(0,count,2): |
| start=4*i+22 |
| end=4*i+4+22 |
| hstart=4*i+26 |
| hend=4*i+26+4 |
| datalow=(int(ret[start:end],16)) |
| datahigh=(int(ret[hstart:hend],16)) |
| data=datahigh*65536+datalow |
| datanum.append(data) |
| print(str(data)) |
| #ビットの読み出し |
| if connect_status==0: |
| subheader='5000' |
| net='00' |
| pc='FF' |
| unitio='03FF' |
| unitno='00' |
| nlen='0018' |
| cputimer='0010' |
| command='0401' |
| subcommand='0001' |
| device='M*000000' |
| number='0004' |
| cmd=subheader+net+pc+unitio+unitno+nlen+cputimer+command+subcommand+device+number |
| myapp.mysend(cmd) |
|
count=4 ret=[] anser=[] |
| ret=myapp.myreceive().decode('utf-8') |
| datanum=[] |
| anser=ret[18:22] |
| if anser=='0000': |
| for i in range(0,count): |
| start=i+22 |
| data=(int(ret[start],10)) |
| datanum.append(data) |
| print(str(data)) |
| if __name__ == '__main__': |
| main() |