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免費(fèi)做自己的網(wǎng)站有錢賺嗎,搜狗seo查詢,Wordpress帶商城的主題,備案網(wǎng)站漏接電話硬件設(shè)備本實(shí)驗(yàn)中使用到的設(shè)備如下： 1、S7-200 Smart SR20 PLC 作為受控設(shè)備，執(zhí)行機(jī)構(gòu)。 S7-200 Smart是西門子的一款小型PLC產(chǎn)品（以下簡(jiǎn)稱Smart系列）。 Smart系列PLC是西門子公司經(jīng)過(guò)大量調(diào)研，為中國(guó)小型自動(dòng)化…

硬件設(shè)備

本實(shí)驗(yàn)中使用到的設(shè)備如下：

1、S7-200 Smart SR20 PLC

作為受控設(shè)備，執(zhí)行機(jī)構(gòu)。

S7-200 Smart是西門子的一款小型PLC產(chǎn)品（以下簡(jiǎn)稱Smart系列）。

Smart系列PLC是西門子公司經(jīng)過(guò)大量調(diào)研，為中國(guó)小型自動(dòng)化市場(chǎng)量身打造的一款PLC產(chǎn)品。與西門子S7-1200系列相比，Smart系列不支持博途開(kāi)發(fā)環(huán)境（使用STEP 7-MicroWIN SMART編程）、不支持Profinet通信（但支持Profibus）；最多能擴(kuò)展6個(gè)信號(hào)模塊（EM）和1個(gè)信號(hào)板（SB）。

S7-200 SMART PLC 主要性能參數(shù) V2.3，如下圖

2、串口服務(wù)器：USR-TCP232-410s

將PLC的485 串口信號(hào)轉(zhuǎn)成網(wǎng)絡(luò)信號(hào)接入局域網(wǎng)

產(chǎn)品參數(shù)如下：

3、單板機(jī)Orange Pi 3 LTS

運(yùn)行EPICS IOC，運(yùn)行上位控制程序。

4、串口線?

軟件部分

1、PLC上編程

初始化PLC為從設(shè)備，設(shè)置其工作模式為modbus rtu, 地址為3，波特率為115200，使用PLC自帶串口，無(wú)延時(shí)，最大IO個(gè)數(shù)為256，最大模擬量為56個(gè)字，V存儲(chǔ)器是從VB2000開(kāi)始的100個(gè)字

一直使能這個(gè)從設(shè)備?

2、串口服務(wù)器部分

通過(guò)瀏覽器設(shè)置串口服務(wù)器的IP地址為自己所需的地址：

設(shè)置RS485端口的串口參數(shù)，需要和PLC設(shè)置的參數(shù)保持一致，以及訪問(wèn)此RS485所需的端口號(hào):

3、單板機(jī)部分：

安裝操作系統(tǒng)和所需的EPICS模塊

1）操作系統(tǒng)

Distributor ID: Ubuntu
Description:    Ubuntu 22.04.2 LTS
Release:        22.04
Codename:       jammy

2）所需安裝的EPICS 模板

由于EPICS模塊之間的依賴關(guān)系，需要以下4個(gè)模塊：

base, seq , ipac ,asyn, modbus

4、IOC建立過(guò)程

先創(chuàng)建一個(gè)項(xiàng)目目錄，在其下用makeBaseApp工具創(chuàng)建一個(gè)IOC應(yīng)用程序的框架，編輯configure/RELEASE文件，添加本IOC依賴的模塊，在程序src下Makefile中添加所依賴的庫(kù)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：

bi_bit.template：用于按位讀取PLC的輸入輸出點(diǎn)。

record(bi,"$(P)$(R)$(D)$(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)")
}

bo_bit.template：用于按位寫PLC的輸出點(diǎn)。

record(bo,"$(P)$(R)Q$(M)_$(N)") {field(DTYP,"asynUInt32Digital")field(OUT,"@asynMask($(PORT) $(OFFSET) 0x1)")field(ZNAM,"$(ZNAM)")field(ONAM,"$(ONAM)")
}

??longin_int16.template：用于按字讀取PLC的V存儲(chǔ)器以及模擬輸入映像區(qū)，并且轉(zhuǎn)成16位整數(shù)。

record(longin,"$(P)$(R)$(T)_$(M)") {field(DTYP,"asynInt32")field(INP,"@asyn($(PORT) $(OFFSET))$(DATA_TYPE)")field(SCAN, "$(SCAN)")
}

longoutInt16.template：?用于把16位整數(shù)按字寫入PLC的V存儲(chǔ)器。

record(longout,"$(P)$(R)$(T)_$(M)") {field(DTYP,"asynInt32")field(OUT,"@asyn($(PORT) $(OFFSET))$(DATA_TYPE)")
}

?float32_in.template：用于按雙字讀取PLC的V存儲(chǔ)區(qū)，并且轉(zhuǎn)成32位浮點(diǎn)數(shù)。

record(ai, "$(P)$(R)$(T)_$(M)") {field(DTYP,"asynFloat64")field(INP,"@asyn($(PORT) $(OFFSET))$(DATA_TYPE)")field(HOPR,"$(HOPR)")field(LOPR,"$(LOPR)")field(PREC,"$(PREC)")field(SCAN,"$(SCAN)")
}

float32_out.template：用于將32位浮點(diǎn)數(shù)按雙字寫入到PLC的V存儲(chǔ)器。

record(ao, "$(P)$(R)$(T)_$(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的頂層目錄，編譯以上代碼，生產(chǎn)IOC程序。

5、編輯啟動(dòng)目錄，添加模板替換文件，編輯啟動(dòng)腳本st.cmd:

1）添加的實(shí)例化文件如下：

1）qb.substitutions：實(shí)例化8個(gè)bo記錄，用于寫，分別寫一個(gè)位到PLC的輸出點(diǎn)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：實(shí)例化8個(gè)bi記錄，用于讀取，分別讀取一個(gè)位到PLC的輸出點(diǎn)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"}
}

3）ib.substitutions：實(shí)例化8個(gè)bi記錄，用于讀取，分別讀取一個(gè)位到PLC的輸出點(diǎn)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：實(shí)例化2個(gè)longin記錄，第一個(gè)實(shí)例將從PLC模擬輸入?yún)^(qū)或V存儲(chǔ)區(qū)讀取的一個(gè)字轉(zhuǎn)換成16位有符號(hào)數(shù)，第二個(gè)實(shí)例將從PLC模擬輸入?yún)^(qū)或V存儲(chǔ)區(qū)讀取的一個(gè)字轉(zhuǎn)換成16位無(wú)符號(hào)數(shù)。

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"}
}

5）into.substitutions：實(shí)例化2個(gè)longout記錄，第一個(gè)實(shí)例將16位有符號(hào)數(shù)按字寫入到PLC的V存儲(chǔ)區(qū)，第一個(gè)實(shí)例將16位無(wú)符號(hào)數(shù)按字寫入到PLC的V存儲(chǔ)區(qū)。

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：實(shí)例化2個(gè)ai記錄，這兩個(gè)實(shí)例將分別從PLC模擬輸入?yún)^(qū)或V存儲(chǔ)區(qū)讀取的二個(gè)字轉(zhuǎn)換成32位浮點(diǎn)數(shù)。

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）實(shí)例化2個(gè)ao記錄，這兩個(gè)實(shí)例將分別將32位浮點(diǎn)數(shù)按雙字寫入到PLC的V存儲(chǔ)區(qū)

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）編輯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 "${TOP}"## Register all support components
dbLoadDatabase "dbd/sr20smart.dbd"
sr20smart_registerRecordDeviceDriver pdbbasedrvAsynIPPortConfigure("sr20smart","192.168.3.209:6666",0,0,1)
modbusInterposeConfig("sr20smart",1 ,2000,0)# func code = 5 按位寫線圈
drvModbusAsynConfigure("QB0",   "sr20smart", 3, 5,  0, 8 , 0, 100, "QB0")
# func code = 1 按位讀線圈
drvModbusAsynConfigure("QB0_RBV", "sr20smart", 3, 1,  0, 8 , 0, 200, "QB0_RBV")# func code = 2 按位讀取離散輸入
drvModbusAsynConfigure("IB0_1", "sr20smart", 3, 2,  0, 8 , 0,   200, "IB0_1")# func code = 3 按字讀取保持寄存器
drvModbusAsynConfigure("VW",    "sr20smart", 3, 3,  0, 20  , 0, 200, "VW")# func code = 4 按字讀取輸入寄存器
drvModbusAsynConfigure("AWI",   "sr20smart", 3, 4,  0, 10  , 0,  200, "AWI")# func code = 6 按字寫入保持寄存器
drvModbusAsynConfigure("VWO",   "sr20smart", 3, 6,  0, 20  , 0,  200, "VWO")cd "${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")iocInit

IOC程序啟動(dòng)以及測(cè)試

在IOC啟動(dòng)目錄下，程序啟動(dòng)命令：../../bin/linux-aarch64/sr20smart st.cmd

dbl查看所有加載的記錄。

root@orangepi3-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. 2023-06-25T15:50+0000
## Rev. Date build date/time:
############################################################################
iocRun: All initialization complete
## Start any sequence programs
#seq sncxxx,"user=blctrl"
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_UIO

1）bo記錄SR20SMART:BIT:Q0_0 ~?SR20SMART:BIT:Q0_7：用于設(shè)置PLC Q0.0~Q0.7。

2）bi記錄SR20SMART:BIT:Q0_0_RBV ~ SR20SMART:BIT:Q0_7_RBV：用于讀取PLC Q0.0~Q0.7的狀態(tài)。

3）bi記錄SR20SMART:BIT:I0_1~SR20SMART:BIT:I0_7：用于讀取PLC I0.0~I0.7的狀態(tài)。

4) longin記錄SR20SMART:INT16_I0和SR20SMART:UINT16_UI0：用于讀取V存儲(chǔ)區(qū)VW2000,VW2002。

5）longin記錄SR20SMART:AINT16_I0和SR20SMART:AUINT16_UI0：用于讀取模擬量輸入寄存器AIW0和AIW2。

6）bo記錄SR20SMART:INT16_IO和SR20SMART:UINT16_UIO：用于寫入V存儲(chǔ)區(qū)VW2000,VW2002。

7）ai記錄SR20SMART:FLOAT32:_F00和SR20SMART:FLOAT32:_F01用于讀取V存儲(chǔ)區(qū)VD2004和VD2008。

8) ao記錄SR20SMART:FLOAT32:_F00O和SR20SMART:FLOAT32:_F01O：寫入V存儲(chǔ)區(qū)VD2004和VD2008。

測(cè)試

用STEP7 Micro/Win SMART狀態(tài)表設(shè)置V存儲(chǔ)區(qū)如下：

用通道訪問(wèn)進(jìn)行讀取：

# VW2000
orangepi@orangepi5:~$ caget SR20SMART:INT16_I0
SR20SMART:INT16_I0             -12345
# VW2002
orangepi@orangepi5:~$ caget SR20SMART:UINT16_UI0
# VD2004
SR20SMART:UINT16_UI0           22222
orangepi@orangepi5:~$ caget SR20SMART:FLOAT32:_F00
SR20SMART:FLOAT32:_F00         3.1415
# VD2008
orangepi@orangepi5:~$ caget SR20SMART:FLOAT32:_F01
SR20SMART:FLOAT32:_F01         0.1111
# AIW0
orangepi@orangepi5:~$ caget SR20SMART:AINT16_I0
SR20SMART:AINT16_I0            -2000
# AIW2
orangepi@orangepi5:~$ caget SR20SMART:AUINT16_UI0
SR20SMART:AUINT16_UI0          2000

用通道訪問(wèn)寫更改Q和V存儲(chǔ)區(qū)：

# Q0.0
orangepi@orangepi5:~$ caput SR20SMART:BIT:Q0_1 0
Old : SR20SMART:BIT:Q0_1             High
New : SR20SMART:BIT:Q0_1             Low
# Q0.1
orangepi@orangepi5:~$ caput SR20SMART:BIT:Q0_0 0
Old : SR20SMART:BIT:Q0_0             High
New : SR20SMART:BIT:Q0_0             Low
# VW2000
orangepi@orangepi5:~$ caput SR20SMART:INT16_IO -6666
Old : SR20SMART:INT16_IO             0
New : SR20SMART:INT16_IO             -6666
# VW2002
orangepi@orangepi5:~$ caput SR20SMART:UINT16_UIO 8888
Old : SR20SMART:UINT16_UIO           0
New : SR20SMART:UINT16_UIO           8888
# VD2004
orangepi@orangepi5:~$ caput SR20SMART:FLOAT32:_F00O 1.2345
Old : SR20SMART:FLOAT32:_F00O        0
New : SR20SMART:FLOAT32:_F00O        1.2345
# VW2008
orangepi@orangepi5:~$ caput SR20SMART:FLOAT32:_F01O 5.4321
Old : SR20SMART:FLOAT32:_F01O        0
New : SR20SMART:FLOAT32:_F01O        5.4321

從STEP7 Micro/Win SMART狀態(tài)表查看相應(yīng)的存儲(chǔ)區(qū)：

結(jié)論

通過(guò)EPICS modbus模塊通過(guò)modbus rtu協(xié)議能夠?qū)崿F(xiàn)對(duì)PLC輸入映像區(qū)和模擬輸入?yún)^(qū)的讀取和對(duì)輸出映像區(qū)和V存儲(chǔ)器的讀寫。

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硬件設(shè)備

1、S7-200 Smart SR20 PLC

S7-200 SMART PLC 主要性能參數(shù) V2.3，如下圖

2、串口服務(wù)器：USR-TCP232-410s

3、單板機(jī)Orange Pi 3 LTS

4、串口線?

軟件部分

1、PLC上編程

2、串口服務(wù)器部分

3、單板機(jī)部分：

1）操作系統(tǒng)

2）所需安裝的EPICS 模板

4、IOC建立過(guò)程

configure/RELEASE：

xxxApp/src：

xxxApp/Db：

bi_bit.template：用于按位讀取PLC的輸入輸出點(diǎn)。

bo_bit.template：用于按位寫PLC的輸出點(diǎn)。

5、編輯啟動(dòng)目錄，添加模板替換文件，編輯啟動(dòng)腳本st.cmd:

1）添加的實(shí)例化文件如下：

2）編輯st.cmd文件：

IOC程序啟動(dòng)以及測(cè)試

測(cè)試

結(jié)論

通過(guò)EPICS modbus模塊通過(guò)modbus rtu協(xié)議能夠?qū)崿F(xiàn)對(duì)PLC輸入映像區(qū)和模擬輸入?yún)^(qū)的讀取和對(duì)輸出映像區(qū)和V存儲(chǔ)器的讀寫。

相關(guān)文章：

中文亚洲精品无码_熟女乱子伦免费_人人超碰人人爱国产_亚洲熟妇女综合网

硬件設(shè)備

1、S7-200 Smart SR20 PLC

S7-200 SMART PLC 主要性能參數(shù) V2.3，如下圖

2、串口服務(wù)器 ：USR-TCP232-410s

3、單板機(jī)Orange Pi 3 LTS

4、串口線?

軟件部分

1、PLC上編程

2、串口服務(wù)器部分

3、單板機(jī)部分：

1） 操作系統(tǒng)

2）所需安裝的EPICS 模板

4、IOC建立過(guò)程

configure/RELEASE：

xxxApp/src：

xxxApp/Db：

bi_bit.template：用于按位讀取PLC的輸入輸出點(diǎn)。

bo_bit.template：用于按位寫PLC的輸出點(diǎn)。

5、編輯啟動(dòng)目錄，添加模板替換文件，編輯啟動(dòng)腳本st.cmd:

1）添加的實(shí)例化文件如下：

2） 編輯st.cmd文件：

IOC程序啟動(dòng)以及測(cè)試

測(cè)試

結(jié)論

通過(guò)EPICS modbus模塊通過(guò)modbus rtu協(xié)議能夠?qū)崿F(xiàn)對(duì)PLC輸入映像區(qū)和模擬輸入?yún)^(qū)的讀取和對(duì)輸出映像區(qū)和V存儲(chǔ)器的讀寫。

相關(guān)文章：

2、串口服務(wù)器：USR-TCP232-410s

3、單板機(jī)Orange Pi 3 LTS

1、PLC上編程

2、串口服務(wù)器部分

3、單板機(jī)部分：

1）操作系統(tǒng)

4、IOC建立過(guò)程

bi_bit.template：用于按位讀取PLC的輸入輸出點(diǎn)。

bo_bit.template：用于按位寫PLC的輸出點(diǎn)。

5、編輯啟動(dòng)目錄，添加模板替換文件，編輯啟動(dòng)腳本st.cmd:

2）編輯st.cmd文件：

通過(guò)EPICS modbus模塊通過(guò)modbus rtu協(xié)議能夠?qū)崿F(xiàn)對(duì)PLC輸入映像區(qū)和模擬輸入?yún)^(qū)的讀取和對(duì)輸出映像區(qū)和V存儲(chǔ)器的讀寫。