通讯线用的是USB转MPI的STEP 7专用通讯线. 在控制面板中"Setting the PG/PC Interface"中应用程序访问点为: S7ONLINE (STEP 7) -->PC Adapter(MPI). 该通讯线能与NCU的X122接口正常调试PLC程序.看手册上说"Connection of the PC / PG to a 810D / 840D:
HMI Advanced and 810D / 840D communicate via an MPI connection from the MPI / DP connection of the PC / PG to the MPI / OPI connection of the 810D / 840D. On the HMI the OPI has been defaulted with 1.5 Mbaud and NC/PLC address 13. The MPI interface of the PC / PG (Control Panel / PG/PC Interface) must be set to "S7ONLINE (STEP7)  CP***x (MPI)". 是不是说不能用USB转MPI+的通讯线呀?