我按照文档配置了IOSERVER连接300，一开始连接状态是GOOD，过了十几秒就变成BAD了，然后LOG日志返回超时的错误信息

2013-9-4 13:54:35 2388 2372 Info s7 ERROR: TIMEOUT for pending initiate request cpd=7 cref=0373
2013-9-4 13:54:35 2388 2372 Info s7 ERROR(-2): s7_get_initiate_cnf (cpd=7 cref=0 TCP/IP -> Broadcom NetXtreme Gig... Application S7 connection_1) [(120) connection has been aborted: establish new connection.]374

请问这个怎么解决