Description
BW以1点为单位,写入位元件的状态
WW以16点为单位,写入位元件的状态,或以1字为单位,写入值到字元件
BT以1点为单位,SET/RESET位元件
WT以16点为单位,SET/RESET位元件,或写入值到字元件
RR控制PLC运行RUN
RS控制PLC停止STOP
PC读出PLC设备类型
TT连接测试
注:位元件包括X,Y,M,S以及T,C的线圈等;
字元件包括D,T,C,KnX,KnY,KnM等。
FX系列PLC专用协议通信指令格式详解
约定说明:
ENQ为请求标志,ASCII值5,VB中以chr(5)表示;
ACK为正确标志,ASCII值6,VB中以chr(6)表示;
STX为请求标志,ASCII值2,VB中以chr(2)表示;
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