PRS-2P250 功率放大器 2X250 W 用于控制运行功率 BOSCH

产品标题：PRS-2P250 功率放大器 2X250 W 用于控制运行功率 BOSCH

型号：PRS-2P250 功率放大器 2X250 W 用于控制运行功率  

品牌：  BOSCH

质保：七天验收期，质保期一年
发货期：1-3个工作日

产品图片展示

产品详情资料
 
图2-20所示为Advant Fieldbus 100总线，由三根同轴电缆和一根光缆组成
和一个双绞线电缆段。这给了我们以下长度，2000米
配置，根据公式：
2000--4 x 150=1400米
或英尺
6500-4 x 500=4500英尺
物理电缆总长度，光缆+同轴电缆+双绞线，如图所示
根据上述计算，大可达1400米（4500英尺）。此长度可以拆分
只要同轴电缆不超过大值
电缆类型的长度（300米（1000英尺）或700米（2300英尺））。
由此，我们得到了以下限制：
A+B+C+D+E<=1400米（4500英尺）和
A、 对于RG11，C、E<=700米（2300英尺）；对于RG59，E<=300米（1000英尺）
D<=750米（2500英尺）。
注意！
该公式也适用于8500和15000米配置，参见
1.8.2章Advant Fieldbus 100长度概念
支持这些长度的设备。
在“树状”配置中使用Advant Fieldbus 100时，总线长度为
公共汽车上相距远的两个车站。这意味着
为了决定
哪两站相距远。关于总线计算方法的相同角色
长度以及可能的长度对于星形配置和公共总线都有效
配置
图2-21显示了“树形”配置的Advant Fieldbus 100。与的规则相同
计算电缆长度时，图2-20有效。的区别是这两个车站
计算中使用的距离大。
由此，我们得到了以下限制：
A+B+C+D+E<=1400米（4500英尺）和
A+B+C+F+G+H<=1400米（4500英尺）和
E+D+F+G+H<=1400米（4500英尺）和
A、 （C+F）、E、H<=700米（2300英尺）（对于RG 11）或300米（1000英尺）（针对RG59和
D、 G<=750米（2500英尺）。注意！该公式也适用于8500和15000米配置，参见
1.8.2章Advant Fieldbus 100长度概念
支持这些长度的设备。
Artisan Technology Group-质量仪器…保证|（888）88-SOURCE | www.artistg.com
Advant®Fieldbus 100用户指南
2.8.3节计算Advant Fieldbus 1003BSE 000 506R701 2-23150米（500英尺）介质的大总线长度
Artisan Technology Group-质量仪器…保证|（888）88-SOURCE | www.artistg.com
Advant®Fieldbus 100用户指南
2章先进的现场总线100概念
2-24 3BSE 000 506R701
2.9传输原理
循环数据包（CDP）的传输通过扫描表进行管理。它包含
有关所有发送CDP的信息以及何时必须在
Advant现场总线100。
扫描表按一毫秒的时隙组织，每个时隙中有一个或多个
CDP可能会被传输。
消息传输以事件驱动的方式在未完全完成的时隙中执行
被CDP通信占用。为了确保信息传输是可能的，
25%（2000米）分别为50%（8500米和15000米）的时隙
图2-22中的灰色区域和Figure 2-20 shows an Advant Fieldbus 100 bus consist of three coaxial cable, one optical cable
and one twisted pair cable segment. This gives us the following length, for 2000 meter
configuration, according to the formula:
2,000 -- 4 x 150 = 1,400 meter
or in ft
6,500 - 4 x 500 = 4,500 ft
The total physical cable length, optical cable + coaxial cable + twisted pair cable, in the figure
can be up to 1,400 meters (4,500 ft), according to the calculation above. This length can be split
up any way between the five different parts, as long as no coaxial cable exceeds the maximum
length for it’s type of cable (300 m (1,000 ft) or 700 m (2,300 ft)).
By this, we got the following restrictions:
A + B + C + D + E <= 1,400 meters (4,500 ft) and
A, C, E <= 700 meters (2,300 ft) for RG11 or 300 meters (1,000 ft) for RG59 and
D <= 750 meters (2,500 ft).
NOTE!
This formula is applicable also for 8,500 and 15,000 meter configurations, see
Chapter 1.8.2 Advant Fieldbus 100 length concept for information about
equipment supporting these lengths.
When using Advant Fieldbus 100 in “tree” configuration the bus length is the distance between
the two stations on the bus that is most far apart.This means that a number of length between
different combination of pairs of stations must be taken into consideration in order to decide
which two station that is most far apart. The same roles regarding calculating methods for bus
length as well possible length is valid both for star configuration as well as the common bus
configuration.
The Figure 2-21 shows an Advant Fieldbus 100 in a “tree” configuration. The same rules as for
Figure 2-20 is valid when calculating the cable length. The only difference is that the two stations
that is most far apart is to been used in the calculation.
By this, we got the following restrictions:
A + B + C + D + E <= 1,400 meters (4,500 ft) and
A + B + C + F + G + H <= 1,400 meters (4,500 ft) and
E + D + F + G + H <= 1,400 meters (4,500 ft) and
A, (C + F), E, H <= 700 meters (2,300 ft) for RG 11 or 300 meters (1,000 ft) for RG59 and
D, G <= 750 meters (2,500 ft).NOTE!This formula is applicable also for 8,500 and 15,000 meter configurations, see
Chapter 1.8.2 Advant Fieldbus 100 length concept for information about
equipment supporting these lengths.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Advant® Fieldbus 100 User’s Guide
Section 2.8.3 Calculation of Maximum Bus Length for the Advant Fieldbus 1003BSE 000 506R701 2-23150 meter (500 ft)of media
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Advant® Fieldbus 100 User’s Guide
Chapter 2 Advant Fieldbus 100 Concepts
2-24 3BSE 000 506R701
2.9 Transmission Principles
The transmission of a Cyclic Data Packet (CDPs) is managed through a Scan Table. It contains
information about all sending CDPs and when they must be transmitted on the
Advant Fieldbus 100.
The Scan Table is organized in time-slots of one millisecond, in each of which one or more
CDPs may be transmitted.
Message transfer is performed in an event driven manner in time-slots which are not fully
occupied with CDP communication. In order to make sure that message transfer is possible,
25% (for 2000 meter) respectively 50% (for 8500 and 15000 meter) of the time slots are
reserved for this purpose, the grey area in the Figure 2-22 and
 

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