我用CP5412与S7-300 CP342-5通讯时，发现通讯中断，WINDOWS NT4.0的事件记录中有如下记录：
An exceptional situation has occurred on the CP5412A2(PROFIBUS). The firmware reports "J_rec_overflow_ex". -> Please note down the following information and contact the hotline! Please restart the module!
0000: 00 00 10 00 03 00 5e 00 ......^.
0008: 00 00 00 00 35 02 00 c1 ....5..Á
0010: 01 12 06 02 00 00 00 00 ........
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
0028: 65 0c 04 00 08 02 62 01 e.....b.
0030: 00 00 00 00 00 00 00 00 ........

The CP CP5412A2(PROFIBUS) did not respond in the set time.
0000: 02 00 10 00 02 00 5e 00 ......^.
0008: 00 00 00 00 21 02 00 81 ....!..
0010: 03 07 04 02 01 00 00 c0 .......À
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
0028: 40 02 00 00 00 00 00 00 @.......
0030: 00 80 0e 00 00 00 00 00 .€......

The channel SCP of the CP CP5412A2(PROFIBUS) could not be closed.
0000: 02 00 10 00 03 00 5e 00 ......^.
0008: 00 00 00 00 20 02 00 81 .......
0010: 01 02 04 02 01 00 00 c0 .......À
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
0028: 40 02 00 00 00 00 00 00 @.......
0030: 00 80 0e 00 00 00 00 00 .€......

There are not enough buffer elements in the dual-port RAM of CP5412A2(PROFIBUS) to execute the operation.
0000: 00 00 10 00 02 00 5e 00 ......^.
0008: 00 00 00 00 1e 02 00 81 .......
0010: 01 06 04 02 9a 00 00 c0 ....š..À
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
0028: 40 02 00 00 00 00 00 00 @.......
0030: 00 80 0e 00 00 00 00 00 .€......

请各路大虾多多指教，多谢了！