说明：  VB6与三菱FX PLC 编程口通讯（遍历读FX-PLC的映象区）字号 操作状态CommExit: 0通讯进行状态,通讯被打断 通讯状态CommEnd:开始发送和等待接收,>1:接收串已结束
(VB6 with Mitsubishi FX PLC Programming mouth communications (FX-PLC read traversal of the image area) to operate a state-established CommExit: 0 communication status, communication was interrupted communication state CommEnd: to start to send and waiting to receive,)