→右侧可以QQ留言或拨打垂询电话
由于在RSLogix5000里对I/O模块组态时采用的是I/O模块直接连接，致使每个数字I/O模块的占用一个连接，使得连接数超出。当重做I/O模块组态采用机架优化连接，这样一来I/O模块的连接压缩到了一个机架优化连接内，节省了连接数量和带宽。
2．NUT→右侧可以QQ留言或拨打垂询电话、RPI、带宽
NUT（Network updat Time）、RPI（Requested Packet
Interval）这两个参数在网络中常常影响到网络的带宽，使得网络不畅通或效率不高。在理论上来说当带宽在60%~70%网络效率较高，当带宽不够时就应该减少NUT与RPI时间。另外NUT，RPI之间按一定的关系来确定数值，也能提高网络效率减少带宽，即RPI=2nNUT。
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