Codesys + BeagleBone PLC +LED control

Dear Sir,

I am trying to control GPIO pins of the AM335x (BeagleBone black) platform by designed the BeagleBone into a PLC platform, But I was unable to control the led which is connected in BeagleBone.

I have installed codesys in my PC ( version:Codesys V3.5 SP18 patch 4 +(64-bit)) and download /add the CODESYS Control for BeagleBone SL
I wrote the simple switch and led program
I have added the GPIO device and configured IO parameters and mapping
I have uploaded the code, but not it is not working. I am getting this Message "The bus is not running. The shown values are perhaps not actual"

不知道你的问题是什么，感觉是不太兼容，但是为啥你不说中文呢？

我已经关注了文章‘Codesys + BeagleBone PLC控制达到小儿科水平
” 作者：dylan Zheng

二、项目环境
3.准备Beaglebone系统
3.1 安装Debian系统
3.2 测试Debian系统
4.下载并安装Codesys
5. 下载并安装“CODESYS Control for BeagleBone SL”
6.更新BeagleBone Black
7、新建工程，测试一个简单的PLC程序

最后编写了简单的 LED 控制编程，然后通过从右侧的灯/开关中选择一个 DipSwitch 和灯并将它们添加到可视化文件并将代码编译/下载到 BeagleBone 来执行可视化步骤。它工作正常。

到目前为止，PLC 代码只是在记忆中自娱自乐。它还没有连接到外围设备。为了实现上述需求，利用GPIO读取按键信息，进而控制LED，还需要增加一个GPIO模块。

  1. 我添加了 add GPIO 引脚并完成了 GPIO LED/Button 引脚的配置/关联
    2、至此，一个简单的PLC程序就完成了。接下来，在Beaglebone中，其Sysfs系统中的GPIO不能被二次导出。如果 GPIO48 已经存在，再次运行命令

回声 48 > 出口

GPIO48 会消失

但就我而言，它并没有消失，而是将终端输出显示为

root@beaglebone:/sys/class/gpio# echo 48 > 导出
-bash: echo: 写入错误：设备或资源繁忙
Wǒ yǐjīng guānzhùle wénzhāng ‘Codesys + BeagleBone PLC kòngzhì dádào xiǎo'érkē shuǐpíng
” zuòzhě:Dylan Zheng

èr, xiàngmù huánjìng
3. Zhǔnbèi Beaglebone xìtǒng
3.1 Ānzhuāng Debian xìtǒng
3.2 Cèshì Debian xìtǒng
4. Xiàzài bìng ānzhuāng Codesys
5. Xiàzài bìng ānzhuāng “CODESYS Control for BeagleBone SL”
6. Gēngxīn BeagleBone Black
7, xīnjiàn gōngchéng, cèshì yīgè jiǎndān de PLC chéngxù

zuìhòu biānxiěle jiǎndān de LED kòngzhì biānchéng, ránhòu tōngguò cóng yòu cè de dēng/kāiguān zhòng xuǎnzé yīgè DipSwitch hé dēng bìng jiāng tāmen tiānjiā dào kěshìhuà wénjiàn bìng jiāng dàimǎ biānyì/xiàzài dào BeagleBone lái zhíxíng kěshìhuà bùzhòu. Tā gōngzuò zhèngcháng.

Dào mùqián wéizhǐ,PLC dàimǎ zhǐshì zài jìyì zhōng zì yú zì lè. Tā hái méiyǒu liánjiē dào wàiwéi shèbèi. Wèile shíxiàn shàngshù xūqiú, lìyòng GPIO dòu qǔ ànjiàn xìnxī, jìn'ér kòngzhì LED, hái xūyào zēngjiā yīgè GPIO mókuài.

  1. Wǒ tiānjiāle add GPIO yǐn jiǎo bìng wánchéngle GPIO LED/Button yǐn jiǎo de pèizhì/guānlián
    2, zhìcǐ, yīgè jiǎndān de PLC chéngxù jiù wánchéngle. Jiē xiàlái, zài Beaglebone zhōng, qí Sysfs xìtǒng zhōng de GPIO bùnéng bèi èr cì dǎochū. Rúguǒ GPIO48 yǐjīng cúnzài, zàicì yùnxíng mìnglìng

huíshēng 48 > chūkǒu

GPIO48 huì xiāoshī

dàn jiù wǒ ér yán, tā bìng méiyǒu xiāoshī, ér shì jiāng zhōngduān shūchū xiǎnshì wèi

root@beaglebone:/Sys/class/gpio# echo 48 > dǎochū
-bash: Echo: Xiě rù cuòwù: Shèbèi huò zīyuán fánmáng

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按下开关时 LED 不亮。请告诉我，如何解决问题