发表于：2007/3/16 20:59:00
#0楼
各位大侠，小可最近在看Profinet的英文资料，有如下一些不懂的地方，特请教：
1、three-fold IE FC Outlet RJ45。这是一个IE FC 引出插座 RJ45，three-fold 代表什么含义？
2、integral dummy elements是什么意思？
e.g. The trailing cable can be used indoors or outdoors. Integral dummy elements guarantee a round conductor cross-section.
3、extract的确切含义。
如diagnostic buffer extract、SSL sublist extract。
4、attenuation balance指的是什么？
When routing the cables over greater lengths, it is recommendable to plan one or more repair splice connections in the attenuation balance.
5、adapter casing是种什么东西？
如：Hot swapping of power supply modules, CPUs, adapter casings and interface modules(IM) is not permissible.
6、logical parenthesis
在说到Profinet CBA的资源时出现：e.g. The resource is the execution environment for local applications, also referred to as function blocks. They constitute a logical parenthesis around the software required to operate a device.
7、STEP 7 shadow project，这个叫镜像项目还是影子项目？
8、the actual-value recording
e.g. It is necessary for typical drive applications that the maximum jitter is 1us. This is necessary in order to keep the control loops and the actual-value recording strictly synchronous.
9、Simatic S7 CPU 31x的故障显示中有一项：
Active force job running。（Active force order running）
指的是什么意思？
1、three-fold IE FC Outlet RJ45。这是一个IE FC 引出插座 RJ45，three-fold 代表什么含义？
2、integral dummy elements是什么意思？
e.g. The trailing cable can be used indoors or outdoors. Integral dummy elements guarantee a round conductor cross-section.
3、extract的确切含义。
如diagnostic buffer extract、SSL sublist extract。
4、attenuation balance指的是什么？
When routing the cables over greater lengths, it is recommendable to plan one or more repair splice connections in the attenuation balance.
5、adapter casing是种什么东西？
如：Hot swapping of power supply modules, CPUs, adapter casings and interface modules(IM) is not permissible.
6、logical parenthesis
在说到Profinet CBA的资源时出现：e.g. The resource is the execution environment for local applications, also referred to as function blocks. They constitute a logical parenthesis around the software required to operate a device.
7、STEP 7 shadow project，这个叫镜像项目还是影子项目？
8、the actual-value recording
e.g. It is necessary for typical drive applications that the maximum jitter is 1us. This is necessary in order to keep the control loops and the actual-value recording strictly synchronous.
9、Simatic S7 CPU 31x的故障显示中有一项：
Active force job running。（Active force order running）
指的是什么意思？