這是自已編寫的松下串口讀寫數據，主要功能是寫位，讀位，寫字，讀字。一個用LabView編寫的，一個是用的C#編寫的。



弱弱的問一下，松下PRO7軟件變址如何使用的，松下PRO7資料不怎么好找，求老師傅指點一下。本來擅長日系PLC，雖然西門子200，PLC1200博圖也用過，但還是不能融匯貫通，所以遇到松下歐系編程風格的PRO7還有點吃力。

下面一段
                string c, d;
                switch (tbPlcPointAdress.Text.Length)
                {
                    case 1:
                        c = "000" + tbPlcPointAdress.Text;
                        break;
                    case 2:
                        c = "00" + tbPlcPointAdress.Text;
                        break;
                    case 3:
                        c = "0" + tbPlcPointAdress.Text;
                        break;
                    case 4:
                        c = tbPlcPointAdress.Text;
                        break;
                    default:
                        c = "0000";
                        break;
                }
直接改為
               string c, d;
               c = tbPlcPointAdress.Text;
               c = c.PadLeft(4, '0');
就行了