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企业网站seo优化公司,网站建设中正在为您转,哪些网站可以免费发帖做推广,做视频的网站带模板下载硬件设备 本实验中使用到的设备如下#xff1a; 1、S7-200 Smart SR20 PLC 作为受控设备#xff0c;执行机构。 S7-200 Smart是西门子的一款小型PLC产品#xff08;以下简称Smart系列#xff09;。 Smart系列PLC是西门子公司经过大量调研#xff0c;为中国小型自动化…硬件设备 本实验中使用到的设备如下 1、S7-200 Smart SR20 PLC 作为受控设备执行机构。 S7-200 Smart是西门子的一款小型PLC产品以下简称Smart系列。 Smart系列PLC是西门子公司经过大量调研为中国小型自动化市场量身打造的一款PLC产品。与西门子S7-1200系列相比Smart系列不支持博途开发环境使用STEP 7-MicroWIN SMART编程、不支持Profinet通信但支持Profibus最多能扩展6个信号模块EM和1个信号板SB。 S7-200 SMART PLC 主要性能参数 V2.3如下图 2、串口服务器 USR-TCP232-410s 将PLC的485 串口信号转成网络信号接入局域网 产品参数如下 3、单板机Orange Pi 3 LTS 运行EPICS IOC运行上位控制程序。 4、串口线  软件部分 1、PLC上编程 初始化PLC为从设备设置其工作模式为modbus rtu, 地址为3波特率为115200使用PLC自带串口无延时最大IO个数为256最大模拟量为56个字V存储器是从VB2000开始的100个字 一直使能这个从设备  2、串口服务器部分 通过浏览器设置串口服务器的IP地址为自己所需的地址 设置RS485端口的串口参数需要和PLC设置的参数保持一致以及访问此RS485所需的端口号: 3、单板机部分 安装操作系统和所需的EPICS模块 1 操作系统 Distributor ID: Ubuntu Description: Ubuntu 22.04.2 LTS Release: 22.04 Codename: jammy 2所需安装的EPICS 模板 由于EPICS模块之间的依赖关系需要以下4个模块 base, seq , ipac ,asyn, modbus 4、IOC建立过程 先创建一个项目目录在其下用makeBaseApp工具创建一个IOC应用程序的框架编辑configure/RELEASE文件添加本IOC依赖的模块在程序src下Makefile中添加所依赖的库文件和源文件 在Db文件下添加模板文件 configure/RELEASE … SUPPORT/usr/local/EPICS/synApps/support# If using the sequencer, point SNCSEQ at its top directory: #SNCSEQ \((MODULES)/seq-ver ASYN\)(SUPPORT)/asyn MODBUS\((SUPPORT)/modbus AUTOSAVE\)(SUPPORT)/autosave… xxxApp/src ….sr20smart_DBD asyn.dbd sr20smart_DBD drvAsynIPPort.dbdsr20smart_DBD modbus.dbd sr20smart_DBD asSupport.dbd# Include dbd files from all support applications:

#sr20smart_DBD xxx.dbd

#

# Add all the support libraries needed by this IOC

#sr20smart_LIBS xxx sr20smart_LIBS asyn sr20smart_LIBS modbus sr20smart_LIBS autosave… xxxApp/Db bibit.template用于按位读取PLC的输入输出点。 record(bi,\((P)\)®\((D)\)(M)\((N)) {field(DTYP,asynUInt32Digital)field(INP,asynMask(\)(PORT) \((OFFSET) 0x1))field(SCAN,\)(SCAN))field(ZNAM,\((ZNAM))field(ONAM,\)(ONAM))field(ZSV,\((ZSV))field(OSV,\)(OSV)) } bobit.template用于按位写PLC的输出点。 record(bo,\((P)\)®Q$(M)\((N)) {field(DTYP,asynUInt32Digital)field(OUT,asynMask(\)(PORT) \((OFFSET) 0x1))field(ZNAM,\)(ZNAM))field(ONAM,\((ONAM)) } longin_int16.template用于按字读取PLC的V存储器以及模拟输入映像区并且转成16位整数。 record(longin,\)(P)\((R)\)(T)_\((M)) {field(DTYP,asynInt32)field(INP,asyn(\)(PORT) \((OFFSET))\)(DATATYPE))field(SCAN, \((SCAN)) } longoutInt16.template 用于把16位整数按字写入PLC的V存储器。 record(longout,\)(P)\((R)\)(T)\((M)) {field(DTYP,asynInt32)field(OUT,asyn(\)(PORT) \((OFFSET))\)(DATA_TYPE)) }float32in.template用于按双字读取PLC的V存储区并且转成32位浮点数。 record(ai, \((P)\)®$(T)\((M)) {field(DTYP,asynFloat64)field(INP,asyn(\)(PORT) \((OFFSET))\)(DATA_TYPE))field(HOPR,\((HOPR))field(LOPR,\)(LOPR))field(PREC,\((PREC))field(SCAN,\)(SCAN)) } float32out.template用于将32位浮点数按双字写入到PLC的V存储器。 record(ao, \((P)\)®$(T)\((M)O) {field(DTYP,asynFloat64)field(OUT,asyn(\)(PORT) \((OFFSET))\)(DATA_TYPE))field(HOPR,\((HOPR))field(LOPR,\)(LOPR))field(PREC,\((PREC)) } 回到此IOC的顶层目录编译以上代码生产IOC程序。 5、编辑启动目录添加模板替换文件编辑启动脚本st.cmd: 1添加的实例化文件如下 1qb.substitutions实例化8个bo记录用于写分别写一个位到PLC的输出点Q0.0~Q0.7 file ../../db/bo_bit.template { pattern {P, R, M, N, PORT, OFFSET, ZNAM, ONAM} {SR20SMART:, BIT:, 0 0 QB0, 0, Low, High} {SR20SMART:, BIT:, 0 1 QB0, 1, Low, High} {SR20SMART:, BIT:, 0 2 QB0, 2, Low, High} {SR20SMART:, BIT:, 0 3 QB0, 3, Low, High} {SR20SMART:, BIT:, 0 4 QB0, 4, Low, High} {SR20SMART:, BIT:, 0 5 QB0, 5, Low, High} {SR20SMART:, BIT:, 0 6 QB0, 6, Low, High} {SR20SMART:, BIT:, 0 7 QB0, 7, Low, High} } 2 qb_rbv.substitutions实例化8个bi记录用于读取分别读取一个位到PLC的输出点Q0.0~Q0.7 file ../../db/bi_bit.template { pattern {P, R, D, M, N, PORT, OFFSET, ZNAM, ONAM, ZSV, OSV, SCAN} {SR20SMART:, BIT:, Q, 0, 0_RBV, QB0_RBV, 0, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, Q, 0, 1_RBV, QB0_RBV, 1, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, Q, 0, 2_RBV, QB0_RBV, 2, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, Q, 0, 3_RBV, QB0_RBV, 3, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, Q, 0, 4_RBV, QB0_RBV, 4, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, Q, 0, 5_RBV, QB0_RBV, 5, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, Q, 0, 6_RBV, QB0_RBV, 6, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, Q, 0, 7_RBV, QB0_RBV, 7, Low, High, NO_ALARM, MAJOR, I/O Intr} }3ib.substitutions实例化8个bi记录用于读取分别读取一个位到PLC的输出点I0.0~I0.7 file ../../db/bi_bit.template { pattern {P, R, D, M, N, PORT, OFFSET, ZNAM, ONAM, ZSV, OSV, SCAN} {SR20SMART:, BIT:, I 0 0 IB0_1, 0, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, I 0 1 IB0_1, 1, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, I 0 2 IB0_1, 2, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, I 0 3 IB0_1, 3, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, I 0 4 IB0_1, 4, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, I 0 5 IB0_1, 5, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, I 0 6 IB0_1, 6, Low, High, NO_ALARM, MAJOR, I/O Intr} {SR20SMART:, BIT:, I 0 7 IB0_1, 7, Low, High, NO_ALARM, MAJOR, I/O Intr} } 4) int.substitutions实例化2个longin记录第一个实例将从PLC模拟输入区或V存储区读取的一个字转换成16位有符号数第二个实例将从PLC模拟输入区或V存储区读取的一个字转换成16位无符号数。 file ../../db/longin_int16.template { pattern {P, R, T, M PORT, OFFSET, DATA_TYPE , SCAN} {SR20SMART:, INT, 16, I0, VW, 0 , INT16 , I/O Intr} {SR20SMART:, UINT, 16, UI0, VW, 1 , UINT16 , I/O Intr} } 5into.substitutions实例化2个longout记录第一个实例将16位有符号数按字写入到PLC的V存储区第一个实例将16位无符号数按字写入到PLC的V存储区。 file ../../db/longoutInt16.template { pattern {P, R, T, M, PORT, OFFSET, DATA_TYPE} {SR20SMART:, INT 16, IO, VWO, 0, INT16} {SR20SMART:, UINT 16, UIO, VWO, 1, UINT16} } 6 float.substitutions实例化2个ai记录这两个实例将分别从PLC模拟输入区或V存储区读取的二个字转换成32位浮点数。 file ../../db/float32_in.template { pattern {P, R, T, M, PORT, OFFSET, DATA_TYPE , HOPR, LOPR, , PREC ,SCAN} {SR20SMART:, FLOAT, 32: F00 VW, 2 ,FLOAT32_BE , 1000, -1000, ,3 , I/O Intr} {SR20SMART:, FLOAT, 32: F01 VW, 4 ,FLOAT32_BE , 1000, -1000, ,3 , I/O Intr} } 7实例化2个ao记录这两个实例将分别将32位浮点数按双字写入到PLC的V存储区 file ../../db/float32_out.template { pattern {P, R, T, M, PORT, OFFSET, DATA_TYPE , HOPR, LOPR, , PREC} {SR20SMART:, FLOAT, 32: F00 VWO, 2 ,FLOAT32_BE , 1000, -1000, ,3 } {SR20SMART:, FLOAT, 32: F01 VWO, 4 ,FLOAT32_BE , 1000, -1000, ,3 } } 2 编辑st.cmd文件 #!../../bin/linux-x86_64/sr20smart#- You may have to change sr20smart to something else #- everywhere it appears in this file envPathscd \){TOP}## Register all support components dbLoadDatabase dbd/sr20smart.dbd sr20smart_registerRecordDeviceDriver pdbbasedrvAsynIPPortConfigure(sr20smart,192.168.3.209:6666,0,0,1) modbusInterposeConfig(sr20smart,1 ,2000,0)# func code 5 按位写线圈 drvModbusAsynConfigure(QB0, sr20smart, 3, 5, 0, 8 , 0, 100, QB0)

func code 1 按位读线圈

drvModbusAsynConfigure(QB0_RBV, sr20smart, 3, 1, 0, 8 , 0, 200, QB0_RBV)# func code 2 按位读取离散输入 drvModbusAsynConfigure(IB0_1, sr20smart, 3, 2, 0, 8 , 0, 200, IB0_1)# func code 3 按字读取保持寄存器 drvModbusAsynConfigure(VW, sr20smart, 3, 3, 0, 20 , 0, 200, VW)# func code 4 按字读取输入寄存器 drvModbusAsynConfigure(AWI, sr20smart, 3, 4, 0, 10 , 0, 200, AWI)# func code 6 按字写入保持寄存器 drvModbusAsynConfigure(VWO, sr20smart, 3, 6, 0, 20 , 0, 200, VWO)cd \({TOP}/iocBoot/\){IOC} dbLoadTemplate(qb.substitutions) dbLoadTemplate(qb_rbv.substitutions) dbLoadTemplate(ib.substitutions)dbLoadTemplate(int.substitutions) dbLoadTemplate(float.substitutions) dbLoadTemplate(floato.substitutions) dbLoadTemplate(into.substitutions)iocInitIOC程序启动以及测试 在IOC启动目录下程序启动命令../../bin/linux-aarch64/sr20smart st.cmd dbl查看所有加载的记录。 rootorangepi3-lts:/usr/local/EPICS/program/sr20smart/iocBoot/iocsr20smart# ../../bin/linux-aarch64/sr20smart st.cmd #!../../bin/linux-x86_64/sr20smart … iocInit Starting iocInit ############################################################################

EPICS R7.0.7

Rev. 2023-06-25T15:500000

Rev. Date build date/time:

############################################################################ iocRun: All initialization complete

Start any sequence programs

#seq sncxxx,userblctrl epics dbl SR20SMART:FLOAT32:_F00 SR20SMART:FLOAT32:_F01 SR20SMART:FLOAT32:_F00O SR20SMART:FLOAT32:_F01O SR20SMART:BIT:Q0_0_RBV SR20SMART:BIT:Q0_1_RBV SR20SMART:BIT:Q0_2_RBV SR20SMART:BIT:Q0_3_RBV SR20SMART:BIT:Q0_4_RBV SR20SMART:BIT:Q0_5_RBV SR20SMART:BIT:Q0_6_RBV SR20SMART:BIT:Q0_7_RBV SR20SMART:BIT:I0_0 SR20SMART:BIT:I0_1 SR20SMART:BIT:I0_2 SR20SMART:BIT:I0_3 SR20SMART:BIT:I0_4 SR20SMART:BIT:I0_5 SR20SMART:BIT:I0_6 SR20SMART:BIT:I0_7 SR20SMART:BIT:Q0_0 SR20SMART:BIT:Q0_1 SR20SMART:BIT:Q0_2 SR20SMART:BIT:Q0_3 SR20SMART:BIT:Q0_4 SR20SMART:BIT:Q0_5 SR20SMART:BIT:Q0_6 SR20SMART:BIT:Q0_7 SR20SMART:INT16_I0 SR20SMART:UINT16_UI0 SR20SMART:AINT16_I0 SR20SMART:AUINT16_UI0 SR20SMART:INT16_IO SR20SMART:UINT16_UIO1bo记录SR20SMART:BIT:Q0_0 ~ SR20SMART:BIT:Q0_7用于设置PLC Q0.0~Q0.7。 2bi记录SR20SMART:BIT:Q0_0_RBV ~ SR20SMART:BIT:Q0_7_RBV用于读取PLC Q0.0~Q0.7的状态。 3bi记录SR20SMART:BIT:I0_1~SR20SMART:BIT:I0_7用于读取PLC I0.0~I0.7的状态。

1. longin记录SR20SMART:INT16_I0和SR20SMART:UINT16_UI0用于读取V存储区VW2000,VW2002。 5longin记录SR20SMART:AINT16_I0和SR20SMART:AUINT16_UI0用于读取模拟量输入寄存器AIW0和AIW2。 6bo记录SR20SMART:INT16_IO和SR20SMART:UINT16_UIO用于写入V存储区VW2000,VW2002。 7ai记录SR20SMART:FLOAT32:_F00和SR20SMART:FLOAT32:_F01用于读取V存储区VD2004和VD2008。

2. ao记录SR20SMART:FLOAT32:_F00O和SR20SMART:FLOAT32:_F01O写入V存储区VD2004和VD2008。 测试 用STEP7 Micro/Win SMART状态表设置V存储区如下 用通道访问进行读取

   VW2000

   orangepiorangepi5:~$ caget SR20SMART:INT16_I0 SR20SMART:INT16_I0 -12345

   VW2002

   orangepiorangepi5:~$ caget SR20SMART:UINT16_UI0

   VD2004

   SR20SMART:UINT16_UI0 22222 orangepiorangepi5:~$ caget SR20SMART:FLOAT32:_F00 SR20SMART:FLOAT32:_F00 3.1415

   VD2008

   orangepiorangepi5:~$ caget SR20SMART:FLOAT32:_F01 SR20SMART:FLOAT32:_F01 0.1111

   AIW0

   orangepiorangepi5:~$ caget SR20SMART:AINT16_I0 SR20SMART:AINT16_I0 -2000

   AIW2

   orangepiorangepi5:~$ caget SR20SMART:AUINT16_UI0 SR20SMART:AUINT16_UI0 2000用通道访问写更改Q和V存储区

   Q0.0

   orangepiorangepi5:~$ caput SR20SMART:BIT:Q0_1 0 Old : SR20SMART:BIT:Q0_1 High New : SR20SMART:BIT:Q0_1 Low

   Q0.1

   orangepiorangepi5:~$ caput SR20SMART:BIT:Q0_0 0 Old : SR20SMART:BIT:Q0_0 High New : SR20SMART:BIT:Q0_0 Low

   VW2000

   orangepiorangepi5:~$ caput SR20SMART:INT16_IO -6666 Old : SR20SMART:INT16_IO 0 New : SR20SMART:INT16_IO -6666

   VW2002

   orangepiorangepi5:~$ caput SR20SMART:UINT16_UIO 8888 Old : SR20SMART:UINT16_UIO 0 New : SR20SMART:UINT16_UIO 8888

   VD2004

   orangepiorangepi5:~$ caput SR20SMART:FLOAT32:_F00O 1.2345 Old : SR20SMART:FLOAT32:_F00O 0 New : SR20SMART:FLOAT32:_F00O 1.2345

   VW2008

   orangepiorangepi5:~$ caput SR20SMART:FLOAT32:_F01O 5.4321 Old : SR20SMART:FLOAT32:_F01O 0 New : SR20SMART:FLOAT32:_F01O 5.4321从STEP7 Micro/Win SMART状态表查看相应的存储区 结论 通过EPICS modbus模块通过modbus rtu协议能够实现对PLC输入映像区和模拟输入区的读取和对输出映像区和V存储器的读写。