140EHC20200模块备件

140EHC20200

CAN协议初是为欧洲汽车工业开发的，
以便用负担得起的网络电缆代替昂贵的电缆。今天是
也用于自动化领域，用于在控制之间传输过程数据
分散系统
输入/输出模块、驱动器、阀门等CAN具有高传输级别
因为大部分监控机制已直接在CAN芯片中实现。DeviceNet和CANopen利用物理
CAN（控制器局域网）的结构和数据传输机制。
区别在于传输协议。DeviceNet和CANopen可以是
相应地用于AC500和AC31控制器系列以及现场总线中性FBP设备（分散I/O和智能开关设备），通过
CANopen FBP插头连接器。
数据传输
定义了两种类型的消息：I/O数据传输和直接链接。输入/输出
数据传输用于时间关键的过程数据，而直接链路可以用于
例如，用于诊断消息。
用户总线接入
具有较低地址的连接ID在总线上具有较高优先级。数据是
由源发送，而接收器（即数据的接收器）具有类似的wise
已在配置阶段指定。
卡诺彭
总线按照主/从原理运行，具有一个主机，多127个
奴隶。根据ISO 11898，使用屏蔽双绞线。电缆
长度和传输速率：从大40m开始
以20kbit/s从1Mbit/s到1000m。
设备网
总线基于多主和/或主/从原理运行，具有up
到64个总线用户。使用两种类型的屏蔽双绞线：干线
主线电缆和支线引入电缆。
传输速率125 kBit/s 250 kBit/s 500 kBit/
干线大电缆长度：500米、250米、100米
干线电缆（1610英尺）（820英尺）（328英尺）
干线的大电缆长度：100米、100米和100米
下降电缆（328英尺）（328英尺）
每条支线的大电缆长度：6m、6m、6m
干线电缆/分接电缆（20英尺）（20英尺）
总支线的大电缆长度：156米，78米，39米
干线电缆/分接电缆（512英尺）（256英尺）（128英尺）
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
CANopen和DeviceNet
总自动化（877）268-3700·www.abplc。com·sales@grossautomation.com
4.
4.
4.10低压产品和系统
AC500可编程逻辑控制器
ARCNET
拓扑结构
ARCNET是为数不多的可以在任何可能的情况下运行的网络之一
拓扑结构。选项包括总线拓扑、星形拓扑或树拓扑，或这些拓扑的混合。这
这意味着ARCNET可以用于广泛的不同应用领域。
公交车分配
ARCNET在令牌传递过程中运行，其中每个用户都有
平等权利。
配置机制
ARCNET允许在以下过程中从网络中添加和删除订户：
运行时。当一个新的
添加订户后，将重新配置整个网络。
安全机制
将16位CRC附加到每个数据包，并由接收方进行检查。
如果令牌丢失，将启动重新配置例程，网络将
自动重新构造。此外，还提供了诊断寄存器。
物理特性
ABB建议使用同轴电缆作为直接连接的传输介质
到CPU。而且，双绞线或（玻璃、塑料）光纤电缆也可以
通过总线转换器连接。无需
任何中间放大器不仅取决于使用的介质，还取决于
选定的波特率和用户数。每段的范围各不相同
从简单的双线总线的大约120米到光纤的3公里，
在每种情况下为2.5Mbit/s。通过提供适当的集线器，不同的拓扑结构
并且传输介质可以彼此组合，并且传输
可以增加距离。使用的同轴电缆为93欧姆的类型，例如：。
RG 62。
表达
ARCNET
ARCNET
（附加资源计算机网络）
ARCNET是一种开放的多用途现场总线
具有实时能力的解决方案。可能是
用于多主机联网和
对AC500和AC31控制器系列进行编程，但也用于通过
适当的接口卡（见目录）。
IEEE 802.3i-1990第2.5节规定了允许的双绞线
MBit/s和同轴电缆，例如，一个总线段的大长度为300米，有8个用户，没有集线器。对于双绞线，
在相同条件下，大长度约为120 m
实现。大传输长度取决于连接用户的数量。使用同轴电缆，大可达16公里；
在每种情况下以2.5Mbit/s的速度使用大约6km的双绞线。这个
fi

140EHC20200

140EHC20200

The CAN protocol was originally developed for the European automotive industry,
so as to replace expensive cabling by an affordable network cable. Today, it is
also used in the field of automation for transmitting process data between control
systems, decentralized
I/O modules, drives, valves, etc. CAN features a high level of transmission
security, since large portions of the monitoring mechanisms have been implemented directly in the CAN chip. DeviceNet and CANopen utilize the physical
structure and the data transport mechanisms of CAN (Controller Area Network).
The difference lies in the transmission protocols. DeviceNet and CANopen can be
used correspondingly for the AC500 and AC31 controller series and for field-busneutral FBP devices (decentralized I/Os and intelligent switching devices), via the
CANopen-FBP plug connector.
Data transmission
Two types of message have been defined: I/O data transfer and direct link. I/O
data transfer is used for time-critical process data, while the direct link can be, for
example, used for diagnostic messages.
Bus access for subscribers
The connection ID with the lower address has higher priority on the bus. Data is
transmitted by the source, while the sinks (i.e. receivers of the data) have like wise
been specified during the configuration phase.
CANopen
The bus operates on the master/slave principle with one master and up to 127
slaves. A shielded twisted-pair cable is used, according to ISO 11898. Cable
lengths and transmission rates: from max. 40 m at
1 MBit/s to 1000 m at 20 kBit/s.
DeviceNet
The bus operates on the multi-master and/or the master/slave principle, with up
to 64 bus subscribers. Two types of shielded twisted-pair cables are used: trunk
cable for the main line and drop cable for the branch line.
Transmission rate 125 kBit/s 250 kBit/s 500 kBit/s
Max. cable length of trunk line 500 m 250 m 100 m
Trunk cable (1610 ft) (820 ft) (328 ft)
Max. cable length of trunk line 100 m 100 m 100 m
Drop cable (328 ft) (328 ft) (328 ft)
Max. cable length per branch line 6 m 6 m 6 m
Trunk cable/Drop cable (20 ft) (20 ft) (20 ft)
Max. cable length total branch line 156 m 78 m 39 m
Trunk cable/Drop cable (512 ft) (256 ft) (128 ft)
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
CANopen and DeviceNet
Gross Automation (877) 268-3700 · www.abbplc.com · sales@grossautomation.com
4
4
4.10 Low Voltage Products & Systems
AC500 PLCs
ARCNET
Topology
ARCNET is one of the few networks that can be operated in every conceivable
topology. Options include bus, star, or tree topologies, or mixtures of these. This
means that ARCNET can be used for a broad field of different applications.
Bus assignments
ARCNET operates on the token-passing procedure, where each subscriber has
equal rights.
Configuration mechanisms
ARCNET allows to add and to remove subscribers from the network during
runtime. When a new
subscriber is added, the entire network will be re-configured.
Security mechanisms
A 16-bit CRC is appended to every data packet, and checked by the recipient.
If the token is lost, a reconfiguration routine will be initiated, and the network will
automatically be restructured. Additionally, diagnostic registers are available.
Physical characteristics
ABB recommends coaxial cables as transmission medium, for direct connection
to the CPU. But also twisted-pair cables or (glass, plastic) fiber-optic cables can
be connected via bus converters. The line lengths that can be achieved without
any intermediate amplifiers depend not only on the used medium, but also on the
selected baud rate and the number of subscribers. The ranges per segment vary
from approximate ly 120 m for a simple two-wire bus, up to 3 km for fiber-optics,
in each case at 2.5 MBit/s. By providing appropriate hubs, different topologies
and transmis sion media can be combined with each other and the transmission
distance can be increased. The coaxial cables used are a type with 93 Ohm, e.g.
RG 62.
Communication
ARCNET
ARCNET
(Attached Resource Computer NETwork)
ARCNET is an open, multi-purpose field bus
solution with real-time capability. It can be
used for multi-master networking and for
programming the AC500 and AC31 controller series, but also for connecting additional ARCNET subscribers, e.g. PCs via an
appropriate interface card (see catalog).
The permissible twisted-pair cables are specified in IEEE 802.3i-1990. At 2.5
MBit/s and with coaxial cables, for example, the maximum length of a bus segment is 300 m with eight subscribers and without a hub. With twisted-pair cables,
under the same conditions, a maximum length of approximately 120 m can be
achieved. The maximum transmis -sion length depends on the number of connected subscribers. With coaxial cables, a maximum of 16 km can be achieved;
with twisted-pair cables approximately 6 km, in each case at 2.5 MBit/s. The
fiber-optic link provides the highest degree of interference immunity. With glass
fiber-optics, distances of up to 3 km are possible at 2.5 MBit/s; with plastic fiberoptic cables only small distances of up to approximately 100 m. The baud rate
plays no significant role in fiber-optic cable transmission. Here, the range can as
well be extended using hubs.
Diagnostics
Detailed diagnostic messages for rapid trouble-shooting are shown on the CPU
display.
ARCNET – the functionality at a glance
• Guaranteed collision-free data transmission, guaranteed response times and
real-time capability thanks to token-passing
• Large network dimensions: network length 300 m, with amplifier max. 16 km
• Secure, thanks to checksums in the data packet and hand shake protocol
 between transmitter and receiver
• Variable network structure: bus, tree and star topologies are possible, plus any
 desired mixtures of them
• Variable networking media, coaxial cables, twisted-pair cables and fiber-optic
 cables can be mixed
• Automatic subscriber log-on and log-off; the network automatically incorporates new stations in the ring and cancels them as well
• Master-master access: the subscriber that holds the token is the master. With
up to 255 masters at the same network
• Data transmission rate of max. 2.5 MBit/s
• ARCNET is configured and programmed using the AC500 Con