quote:以下是引用Automann在2011-09-21 09:56:12的发言:
有的模块可设置S5兼容的通信的字节数大于240B。
引自STEP7在线帮助:
1) Notes on the FCs for an S7300 and S7400
S7300:
- With the latest versions of the Ethernet CPs, only FCs AG_SEND and AG_RECV are used; data with a length of up to 8192 bytes can be transferred.