




140DAO85300
140以太网以10 MBit/s的数据速率运行,与100 MBit/s的以太网一样快
MBit/s。以太网采用生产者/消费者模型。这意味着
该电台拥有平等的权利。当它发射时,所有其他电台都在监听
并接受指向它们的数据。总线访问由CSMA/CD管理
程序(具有冲突检测的载波侦听多址接入),其中
当总线空闲时,车站可以自主传输。如果发生碰撞,如果
两个站开始同时发射,两个站都将停止发射并等待随机确定的时间,然后再发射。以太网定义了OSI模型的1层(物理链路)和2层(数据链路)。
AC500支持使用TCP/IP和/
或UDP/IP。进一步的应用层可以通过以下方式实现:
加载。TCP/IP、UDP/IP和应用层的同时操作
也得到保证。IP、TCP、UDP、ARP、RP、BOOTP和DHCP协议
作为标准功能支持,如应用层Modbus/TCP。
拓扑结构
星形或环形,使用以太网集线器或交换机。
数据传输
大10 MB/s,带10个基本T,大100 MB/s
使用快速以太网。
传输媒体
带RJ45连接器的双绞线。这个
对于100 MB/s,大电缆长度为100 m。
诊断
CPU显示屏上显示了快速故障排除的详细诊断信息。
此外,设备状态在通信模块上由四个LED指示。
表达
以太网
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4.
4.
AC500可编程逻辑控制器
低压产品和系统4.7
过程现场总线-分散外围
PROFIBUS DP是一种开放、高速、应用广泛的现场总线。
它在现场区域提供多主和主从通信。这
因此,现场总线可用于AC500和AC31控制系统系列,以及
对于现场总线中性FBP设备(分散I/O和智能切换
设备)通过PROFIBUS-FBP连接器。
表达
主控器控制总线上的数据流量。当拥有公共汽车通道时
授权(令牌),主机可以在无需外部请求的情况下传输数据。
被称为从设备的无源设备不接收任何总线访问权限;他们
确认接收到的消息或响应来自主机的查询。波特
支持9.6 kBaud至12 MBaud的费率。多126台设备
可以在公共汽车上操作。
数据交换
这主要是在主和从之间的循环模式中处理的。这个
PROFIBUS DP规定了必要的通信功能
符合EN 50170的基本功能。每个主机都具有完整的写和读功能
访问其分配的从属设备,但仅对分配给的从属设备进行读取访问
其他总线主控器。主机之间没有直接的数据交换。非周期性
主设备和从设备之间的参数化和诊断服务(DP-V1)
也可用。这与主机的循环用户数据并行执行
交通
PROFIBUS DP–功能一目了然
•通过放大器多126个用户,每个多32个用户(主/从)
公交段
•电缆长度为100 m时,数据传输速率从大12 MBit/s到
1200米时93.75 kBit/s
•多主或主/从通信。使用主控器的总线访问
代币
•通过以下方式连接主CPU和相关通信模块:
9极SUB-D插头连接器。从设备的连接(CPU、I/O和智能
开关设备)通过现场总线插头
•系统电缆为屏蔽双绞线或光纤电缆;传输标准EIA RS485
诊断
CPU上显示了快速故障排除的详细诊断信息
陈列此外,设备状态在通信模块上显示
由四个LED构成。
表达
现场总线DP
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4.
4.8低压产品和系统
AC500可编程逻辑控制器
Modbus®RTU(由Modicon于1979年开发)
Modbus®RTU是一种开放式主/从协议,并且
可以容易地在串行接口上实现。
许多自动化系统具有Modbus®RTU接口作为标准或可选功能,因此能够轻松与
AC500通过其集成的COM1和COM2接口(RS232或
RS485)。Modbus®不仅用于工业应用,而且
也用于建筑安装、能源优化系统、远距离数据传输和连接操作员面板。
表达
通过轮询,即主设备向从设备发送请求,然后
接收响应。接口COM1和COM2可以作为Modbus接口同时操作。使用工程工具设置接口的Modbus操作模式。
拓扑结构
通过RS232的点对点或通过RS485的多点。通过RS232
使用RS485时,多可以有一个主设备和一个从设备
可以操作一个主设备和多31个从设备DAO85300

140DAO85300
Ethernet operates with a data rate of 10 MBit/s and as Fast-Ethernet with 100
MBit/s. Ethernet utilizes the producer/consumer model. This means that every
station possesses equal rights. While it is transmitting, all other stations listen in
and accept the data directed to them. Bus access is regulated by the CSMA/CD
procedure (Carrier-Sense Multiple-Access with Collision Detection), where each
station may autonomously transmit when the bus is free. If a collision occurs, if
two stations begin to transmit simultaneously, both of them will stop transmission and wait for a randomly determined time before they transmit again. Ethernet defines the Layers 1 (Physical Link) and 2 (Data Link) of the OSI model.
The AC500 supports transmission and reception of data using TCP/IP and/
or UDP/IP. Further application layers can be implemented by subsequent
loading. Simultaneous operation of TCP/IP, UDP/IP and application layer
is also assured. The IP, TCP, UDP, ARP, RP, BOOTP, and DHCP protocols
are supported as a standard feature, as application layer Modbus/TCP.
Topology
Star- or ring-shaped using Ethernet hub or switch.
Data transmission
Max. 10 MB/s with 10 Base T and max. 100 MB/s
with Fast-Ethernet.
Transmission media
Twisted-pair cables with RJ45 connector. The
maximum cable length is 100 m for 100 MB/s.
Diagnostics
Detailed diagnostic messages for rapid trouble-shooting are shown on the CPU display.
In addition, the device status is indicated at the communication module by four LEDs.
Communication
Ethernet
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4
AC500 PLCs
Low Voltage Products & Systems 4.7
Process Field Bus - Decentral Periphery
PROFIBUS DP is an open, high-speed and widely-used field bus.
It provides multi-master and master-slave communication in the field area. This
field bus can accordingly be used for AC500 and AC31 control system series and
for field-bus-neutral FBP devices (decentralized I/Os and intelligent switching
devices) via the PROFIBUS-FBP connector.
Communication
The masters rule data traffic on the bus. When in possession of the bus access
authorization (token), the masters can transmit data without an external request.
The passive devices, known as slaves, do not receive any bus access rights; they
acknowledge messages received, or respond to a query from a master. Baud
rates from 9.6 kBaud to 12 MBaud are supported. A maximum of 126 devices
can be operated on the bus.
Data exchange
This is handled predominantly in cyclical mode be-tween master and slave. The
requisite communication functions have been specified by the PROFIBUS DP
basic functions in accordance with EN 50170. Each master has full write and read
access to its assigned slaves, but only read access to the slaves assigned to
other bus masters. There is no direct data exchange between masters. Acyclical
services (DP-V1) for parameterization and diagnostics between master and slave
are also available. This is performed in parallel to the master’s cyclical user data
traffic.
PROFIBUS DP – the functionality at a glance
• Max. 126 subscribers via amplifier and max. 32 subscribers (master/slaves) per
bus segment
• Data transmission rate from max. 12 MBit/s with a cable length of 100 m, up to
93.75 kBit/s with 1200 m
• Multi-master or master/slave communication. Bus access of the masters using
token
• Connection of the master CPU and the associated communication module via
a 9-pole SUB-D plug connector. Connection of slaves (CPU, I/Os and intelligent
switching devices) via FieldBusPlug
• The system cable is a shielded twisted-pair line or a fiber-optic cable; transmission standard EIA RS485
Diagnostics
Detailed diagnostic messages for rapid trouble-shooting are shown on the CPU
display. In addition, the device status is indicated at the communica-tion module
by four LEDs.
Communication
PROFIBUS DP
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4.8 Low Voltage Products & Systems
AC500 PLCs
Modbus® RTU (developed by Modicon in 1979)
Modbus® RTU is an open master/slave protocol, and
can be easily implemented on serial interfaces.
Numerous automation systems have Modbus® RTU interfaces as standard or optional features, and are thus easily able to communicate with
the AC500 via its integrated COM1 and COM2 interfaces (RS232 or
RS485). The Modbus® is used not only in industrial applications, but
also in building installations, in energy optimization systems, for longdistance data transmission and for linking up operator panels.
Communication
By polling, i.e. the master transmits a request to the slave and then
receives the response. Both interfaces COM1 and COM2 can operate simultaneously as Modbus interfaces. The Modbus operating mode of an interface is set using the engineering tool.
Topology
Point-to-point via RS232 or multi-point via RS485. With RS232, a
maximum of one master and one slave is possible, while with RS485
one master and a maximum of 31 slaves can be operated. The maximum cable length is 15 m with RS232 and 1.2 km with RS485.
Data transfer
Max. 187.5 kB/s. Each telegram has a 16-bit CRC appended. The telegrams permit process data (input/output data) to be written and read,
either individually or in groups. The data are packed in the RTU format.
Transmission media
May vary. One widely used option is the RS485 bus physics, a twisted-pair, shielded cable with terminators.
Diagnostics
Detailed diagnostic messages for rapid troubleshoot-ing are shown on the CPU display
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