海湾控制器CAN总线联网调试说明 Ver0.10

控制器 CAN总线联网 调试说明

(Ver.0.10,2010.7)

海湾安全技术有限公司

控制器CAN总线联网调试说明

目 录

一. 1.

联网设备介绍 ································································································································································ 1 LWK系列联网接口卡 ··········································································································································· 1 1.1. 1.2. 1.3. 1.4. 1.5. 2.

概述 ································································································································································ 1 型号及适用范围 ············································································································································ 1 主要技术指标 ················································································································································ 1 结构特征与工作原理 ···································································································································· 1 使用及操作 ···················································································································································· 1

CAN100S CAN总线中继器 ··································································································································· 2 2.1. 2.2. 2.3. 2.4. 2.5.

概述 ································································································································································ 2 主要技术指标 ················································································································································ 2 结构特征与工作原理 ···································································································································· 2 安装与布线 ···················································································································································· 3 常见故障与维修 ············································································································································ 3

3. CAN100F CAN光纤转换器 ·································································································································· 3 3.1. 3.2. 3.3. 3.4. 3.5.

概述 ································································································································································ 3 主要技术指标 ················································································································································ 4 结构特征与工作原理 ···································································································································· 4 安装与布线 ···················································································································································· 5 常见故障与维修 ············································································································································ 5

4. CAN100H CAN星型集中器 ·································································································································· 5 4.1. 4.2. 4.3. 4.4. 4.5.

概述 ································································································································································ 5 主要技术指标 ················································································································································ 6 结构特征与工作原理 ···································································································································· 6 安装与布线 ···················································································································································· 7 常见故障与维修 ············································································································································ 7

二. 1.

CAN联网系统构成及布线要求 ································································································································· 8

系统构成 ································································································································································ 8 1.1. 网络容量 ························································································································································ 8 1.2. 网络组成 ························································································································································ 8 布线要求 ································································································································································ 8 2.1. 线缆规格 ························································································································································ 8 2.2. 布线要求 ························································································································································ 8

网络拓扑实现 ································································································································································ 9

2.

三. 1. 2. 3. 4.

总线型联网 ···························································································································································· 9 环型联网 ······························································································································································ 14 星型联网（星型集中器） ·································································································································· 17 星型联网（中继器） ·········································································································································· 20

1

控制器CAN总线联网调试说明

四. 1.

控制器的使用与操作 ················································································································································· 21

通用说明 ······························································································································································ 21 1.1. CAN网络的从机注册 ·································································································································21 1.2. CAN网络的清除故障从机 ·························································································································21

100控制器 ··························································································································································· 21 200控制器 ··························································································································································· 21 QKP系列气体灭火控制器 ································································································································· 21 500/5000控制器 ·················································································································································· 22 9000控制器 ························································································································································· 22

2. 3. 4. 5. 6.

2

控制器CAN总线联网调试说明

一. 联网设备介绍

1. LWK系列联网接口卡 1.1.

概述

LWK系列联网接口卡是GST100、GST200、GST500、GST5000、GST9000、GST-QKP系列控制器的可选配板卡。在联网接口卡上提供了一路光电隔离的标准CAN接口，用于控制器之间的CAN总线联网。

1.2. 型号及适用范围

联网接口卡型号 LWK100联网接口卡 LWK200联网接口卡 LWK5000联网接口卡 LWK9000联网接口卡 1.3. ? ? ? ? 1.4.

主要技术指标

一路光电隔离的CAN接口；

传输介质：截面积≥1.0 mm2的双绞线，推荐采用屏蔽双绞线； 传输距离：每个CAN回路的距离＜3000m； 板上集成120Ω终端电阻，可通过短路块设置；

结构特征与工作原理

适用控制器 GST100控制器 GST200控制器、GST-QKP04控制器、GST-QKP04/2控制器、GST-QKP01控制器 GST500控制器、GST5000控制器 GST9000控制器 结构特征：

LWK系列联网接口卡的外形尺寸、安装孔位、固定方式均与RS485联网接口卡相同。 ? 指示灯： 主板通讯指示灯：绿色，当与主板正常通讯时闪亮； CAN通讯指示灯：红色，当与CAN网络正常通讯时闪亮； ? 板卡安装方式： GST100/200、GST-QKP控制器：机箱内有卡件安装固定孔，螺丝固定； GST500/5000/9000控制器：直接插入控制器主机箱母板插槽中，螺丝固定；

工作原理：

联网卡由主控电路、CAN总线收发电路、隔离电源等部分组成。CAN总线收发电路与主控电路之间信号采用光耦隔离。CAN总线收发电路收到信息后，由主控电路对信息进行处理，并转发给控制器主板。主控电路收到来自主板的信息后，通过CAN总线收发电路发送到CAN总线上。

1.5. 使用及操作

LWK系列联网接口卡的安装、注册、地址设置、设备定义等基本操作与RS485联网接口卡完全相同，详见第四章。

该网卡组成的CAN网络中，单个CAN回路总长度不应超过3000m，节点数目不应超过112个；线

1

控制器CAN总线联网调试说明

路的两个末端应接终端电阻，用短路块将插针X1的“120”一侧短接即可。

2. CAN100S CAN总线中继器 2.1.

概述

CAN100S CAN总线中继器（以下简称中继器）采用DC24V供电，主要功能如下：

（1）延展总线距离：当CAN总线布线长度超过规范要求时，可添加中继器延长总线通讯距离； （2）拓展总线节点：当单个CAN回路内的节点数目过多，影响通信稳定性时，可添加中继器拓展总线节点数目；

（3）实现特定拓扑结构：构建星型拓扑时，每台控制器应配接1只中继器；构建环型拓扑时，每台控制器应配接2只中继器。

2.2. 主要技术指标 ? ? ? ? ? ? ? 2.3.

工作电压：DC24V

允许范围：DC19.2 V～DC28.8V 工作电流：

静态工作电流：≤50mA 最大工作电流：≤100mA 两路光电隔离的CAN接口；

传输距离：每个CAN回路的距离＜3000m； 板上集成120Ω终端电阻，可通过短路块设置； 使用环境： 温 度：0℃～+40℃ 相对湿度≤95%，不凝露 执行标准：Q/GST 31-2010 外形尺寸：85mm×142mm×34mm 安全防护等级：IP30

结构特征与工作原理

结构特征：

中继器的外形示意图如图1所示。

图1 总线中继器外形示意图

?

指示灯：

CAN1接口通讯指示灯：红色，接口一CAN总线正常通讯时闪亮；

2

控制器CAN总线联网调试说明

CAN2接口通讯指示灯：红色，接口二CAN总线正常通讯时闪亮； ? 设置插针： 模式设置插针X1：当中继器用于组建环型拓扑时，X1用短路块短接；当中继器用于拓展距离、扩展网络节点、用于组建星型拓扑时，X1不得用短路块短接； CAN1终端电阻设置插针X3：短接后并入120Ω终端电阻； CAN2终端电阻设置插针X4：短接后并入120Ω终端电阻；

工作原理：

中继器由主控电路、CAN总线收发电路（两路）、隔离电源等部分组成。两路CAN总线收发电路相互隔离，与主控电路之间信号采用光耦隔离。CAN总线收发电路收到信息后，由主控电路对信息进行处理并转发。

2.4. 安装与布线

警告：安装设备之前，请切断电源。

1. 安装前应首先检查外壳是否完好无损，标识是否齐全。

2. 中继器安装尺寸如图1所示。中继器可安装于控制器内托板上或模块箱内，采用M4螺钉固定。 3. 中继器对外接线端子如图2所示。

D1 D2CAN1L CAN1HCAN2L CAN2H

图2 总线中继器对外接线端子图

D1、D2：

DC24V电源无极性输入端子，输入电压应在DC19.2 V～28.8V间。

CAN1L、CAN1H 、CAN2L、CAN2H：

两路CAN总线端子，与控制器CAN总线连接。单个CAN回路总长度不应超过3000m，节点数目不应超过112个；当作为CAN回路的终端节点时，应用短路块将相应插针短接。

2.5. 常见故障与维修

故障现象 中继器上电后，所有指示灯均未曾点亮 故障原因 DC24V供电电源故障 内部电源电路损坏 故障处理 排除电源故障 返厂维修 查找并排除总线短路点 返厂维修 在总线两个末端接终端电阻 在适当的位置添加总线中继器 中继器无法通信CAN总线被短路 或只能单向通信 内部电路损坏 CAN总线未接终端电中继器通信不稳阻 定 CAN总线距离过长或节点数目过多

3. CAN100F CAN光纤转换器 3.1.

概述

CAN100F光纤转换器（以下简称转换器）采用DC24V供电，能够将控制器CAN总线联网信息转

3

控制器CAN总线联网调试说明

换后通过光纤进行传输，可将传输距离最大延长到25公里。由于采用光纤作为通信传输介质，具有高隔离电压、防电磁干扰、抗雷击等优点，非常适用于以下两类场合： ? 信号传输路径上存在无法回避的较强电磁干扰；

? 节点之间的距离很远，双绞线无法满足其传输要求。

3.2. 主要技术指标 ? ?

工作电压：DC24V

允许范围：DC19.2V～DC28.8V 工作电流：

静态工作电流：≤60mA 最大工作电流：≤120mA 一路光电隔离的CAN接口：

传输距离：每个CAN回路的距离＜3000m； 板上集成120Ω终端电阻，可通过短路块设置； 光纤接口参数：

接口形式： ST头（TX和RX两个接口） 传输介质：单模光纤 光 波 长：1310nm 通讯距离：≤25km 使用环境： 温 度：0℃～+40℃ 相对湿度≤95%，不凝露 执行标准：Q/GST 31-2010 外形尺寸：85mm×142mm×34mm 安全防护等级：IP30

结构特征与工作原理

?

?

?

? ? ? 3.3.

结构特征：

转换器的外形示意图如图3所示。

图3 光纤转换器外形示意图

?

指示灯：

CAN总线通讯指示灯：红色，CAN总线正常通讯时闪亮； 光路接收指示灯：绿色，通过光路接收到有效信息时闪亮；

4

控制器CAN总线联网调试说明

光路发送指示灯：绿色，通过光路发送信息时闪亮； ? 终端电阻设置插针X1：短接后并入120Ω终端电阻；

工作原理：

转换器由主控电路、CAN总线收发电路、光收发驱动电路、隔离电源等部分组成。CAN总线收发电路与其它电路之间信号采用光耦隔离。CAN总线收发电路收到信息后，由主控电路对信息进行处理并转发到光发送电路；光接收电路收到信息后，由主控电路对信息进行处理并转发到CAN总线收发电路。

3.4. 安装与布线

警告：安装设备之前，请切断电源。

1. 安装前应首先检查外壳是否完好无损，标识是否齐全。

2. 转换器安装尺寸如图3所示。转换器可安装于控制器内托板上或模块箱内，采用M4螺钉固定。 3. 转换器对外接线端子如图4所示。

D1 D2TX RXCANL CANH

图4 光纤转换器对外接线端子图

D1、D2：

DC24V电源无极性输入端子，输入电压应在DC19.2V～DC28.8V间。

TX、RX：

光纤连接端子，ST接头，用于连接单模光纤。TX、RX应分别连接另一转换器的RX、TX。

CANL、CANH：

两路CAN总线端子，与控制器CAN总线连接。单个CAN回路总长度不应超过3000m，节点数目不应超过112个；当作为CAN回路的终端节点时，应用短路块将插针X1短接。

3.5. 常见故障与维修

故障现象 转换器上电后，所有指示灯均未曾点亮 故障原因 DC24V供电电源故障 内部电源电路损坏 光路连接问题 转换器无法通信CAN总线被短路 或只能单向通信 内部电路损坏 CAN总线终端电阻配转换器通信不稳置不当 定 CAN总线距离过长或节点数目过多

4. CAN100H CAN星型集中器 4.1.

概述

故障处理 排除电源故障 返厂维修 检查光路连接 查找并排除总线短路点 返厂维修 在总线两个终端位置接终端电阻 在适当的位置添加总线中继器 CAN100H CAN星型集中器（以下简称集中器）采用DC24V供电，主要用于实现标准星型拓扑结构，扩展多路总线分支。此外，星型集中器的主干支持级联，可以满足更多分支的扩展。

5

控制器CAN总线联网调试说明

4.2. ? ?

主要技术指标

工作电压：DC24V

允许范围：DC19.2 V～DC28.8V 工作电流： 4路： 静态工作电流：≤150mA 最大工作电流：≤200mA 8路： 静态工作电流：≤300mA 最大工作电流：≤400mA 12路： 静态工作电流：≤450mA 最大工作电流：≤600mA 16路： 静态工作电流：≤600mA 最大工作电流：≤800mA 4/8/12/16路光电隔离的CAN分支；

传输距离：每个星型分支的距离＜3000m；

每分支板上集成120Ω终端电阻。主干板上集成120Ω终端电阻，可通过短路块设置； 使用环境： 温 度：0℃～+40℃ 相对湿度≤95%，不凝露 执行标准：Q/GST 31-2010 安全防护等级：IP30

结构特征与工作原理

? ? ? ? 4.3.

结构特征：

集中器的外形示意图如图5所示。

?

?

4分支星型集中器 8/12/16分支星型集中器

图5 星型集中器外形示意图

指示灯：

电源指示灯：绿色，外部电源供电正常时点亮；

CAN接口通讯指示灯：红色，相应接口CAN总线正常通讯时闪亮； 设置插针：

主干终端电阻设置插针X1（线路板上）：作为主干回路的终端时，应将短路块短接到“120”一侧。

6

控制器CAN总线联网调试说明

工作原理：

星型集中器由主控电路、CAN总线收发电路（若干路）、隔离电源组成。任意两路CAN总线收发电路相互隔离，与主控电路之间信号采用光耦隔离。CAN总线收发电路收到信息后，由主控电路对信息进行处理并向其它分支及主干转发。每个分支与干路总线双向数据透明传输。

4.4. 安装与布线

警告：安装设备之前，请切断电源。

1. 安装前应首先检查外壳是否完好无损，标识是否齐全。

2. 集中器安装尺寸如图5所示。4路集中器单独采用小巧外壳，可直接安装于标准托盘上；8/12/16路

集中器共用较大的外壳，需使用专用托板安装在柜内后方。 3. 集中器对外接线端子如图6所示。

图6 星型集中器对外接线端子图

DC24V：

DC24V电源无极性输入端子，输入电压应在DC19.2 V～28.8V间。

xL、xH：

CAN总线端子。其中主干端子与所在控制器CAN总线连接，或级联下一集中器；分支端子连接该分支CAN总线。单个CAN回路总长度不应超过3000m，节点数目不应超过112个。

4.5. 常见故障与维修

故障现象 上电后，集中器电源指示灯未点亮 某路分支无法通信或只能单向通信 集中器通信不稳定

故障原因 DC24V供电电源故障 内部电源电路损坏 CAN总线被短路 内部电路损坏 CAN总线未接终端电阻 CAN总线距离过长或节点数目过多 故障处理 排除电源故障 返厂维修 查找并排除总线短路点 返厂维修 在总线两个末端接终端电阻 在适当的位置添加总线中继器 7

控制器CAN总线联网调试说明

二. CAN联网系统构成及布线要求

1. 系统构成 1.1.

网络容量

CAN联网系统最多支持240台GST系列控制器联网。 1.2. 网络组成

? 每台控制器配接1块LWK系列联网卡，即可组成最基本的总线型CAN联网系统。

? 每台控制器接1块LWK系列联网卡、再配接1只CAN100S CAN总线中继器，可实现星型CAN

联网系统。

? 每台控制器接1块LWK系列联网卡、再配接2只CAN100S CAN总线中继器，可实现环型CAN

联网系统。

? 当单个CAN回路的距离过长、或节点数目过多，影响CAN回路通讯稳定性时，可在适当的位置

添加CAN100S总线中继器将网络分隔成相互隔离的两个CAN回路，从而满足通讯稳定性要求。 ? 当单个CAN回路的距离过长（远大于3000m）或传输路径上存在不可避免的强电磁干扰时，可

在适当的位置添加一对CAN100F光纤转换器，通过光信号进行总线通讯，从而满足通讯稳定性要求。 2. 布线要求 2.1.

线缆规格

CAN总线布线应采用RVVS双绞线或RVVSP屏蔽双绞线，截面积≥1.0 mm2；DC24V电源线采用BV线，截面积≥1.5mm2。 2.2. 布线要求

? 每个CAN回路布线长度不得超过3000m，节点数量不得超过112个。

? 每个CAN回路都应当在线路的两端接入终端电阻，即在线路两端的设备上插接短路块。少接或

不接终端电阻，可能导致总线信号发生反射而影响通讯；接入过多的终端电阻，可能导致总线信号过度衰减而影响通讯。

重要提示：

当从485联网更换到CAN联网、并且原网络中既有100 / 200 / QKP控制器也有500 / 5000 / 9000控制器时，需注意以下问题：

100/200 485联网卡的接线端子左A右B；LWK100/200的对外端子左CAN_L右CAN_H； 5000/9000母板接线端子左B右A，插上CAN联网卡后左CAN_L右CAN_H；

更换联网卡后，两类控制器的出线顺序是相反的。因此在进行485联网到CAN联网改造时，如果存在100 / 200 / QKP控制器与500 / 5000 / 9000控制器的混接时，需要在接线端子处调整线序，保障整个网络的CAN_L相互连接、CAN_H相互连接。

8

控制器CAN总线联网调试说明

三. 网络拓扑实现

1. 总线型联网

特点：

? 该联网方案为最基本的联网方案，直接通过LWK系列联网接口卡组成总线型网络； ? 设备配置较简单，成本较低；

? 总线型连接时，任何两台相邻控制器之间的CAN总线断路或短路，均会使整个网络分割成两

部分，影响整个网络之间的信息传递。

适用范围：

总线型为我公司的基本联网方案。

设备配置：

? 总线型联网时，每台控制器应配备1块LWK系列联网接口卡；

? 如果某两台相邻控制器之间的距离较远，可添加总线中继器扩展传输距离；

? 如果某两台相邻控制器之间的距离很远，可添加1对CAN100F光纤转换器，用于光纤联网。

基本的总线型拓扑如图7所示。

接线时应直接接在联网卡的CAN端子上或控制器的滤波器端子上；禁止从端子引线搭接在干线上，错误的接线方式如图8所示。

加入CAN100S总线中继器的总线型拓扑如图9所示。 加入CAN100F光纤转换器的总线型拓扑如图10所示。

9

控制器1LWK系列联网接口卡CANL CANH120120控制器2控制器n-1LWK系列联网接口卡CANL CANH控制器nLWK系列联网接口卡CANL CANH120LWK系列联网接口卡CANL CANH120????控制器CAN总线联网调试说明

图7 基本的总线型拓扑连接

10

屏蔽双绞线图示说明：120短路块悬空(无终端电阻)120短路块有效(有终端电阻)

控制器1LWK系列联网接口卡CANL CANH120控制器2控制器n-1LWK系列联网接口卡CANL CANH120控制器nLWK系列联网接口卡CANL CANH120LWK系列联网接口卡CANL CANH不良的分支120????不良的分支控制器CAN总线联网调试说明

图8 错误的接线方式：增加分支长度、影响通信质量

屏蔽双绞线11

图示说明：120短路块悬空(无终端电阻)120短路块有效(有终端电阻)

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