为什么条形码没有响应图像捕获命令 [英] Why the barcode did not respond to image capture Command
问题描述
我正在编写一个程序，可以从条形码中读取和写入
写入时的问题（向条形码发送命令）
我读了pdf制造商条形码捕获图像的命令是IMGSNP所以我把它传递给写函数如下serialPortObj.write（" IMGSNP"）
但是为什么没有条形码来回应命令？并没有捕获图像:(
这是错误的方式
条形码制造商是HandHeld（4800p）
感谢您的帮助
可能有十几种不同的原因 - 信息很少。
也许你没有读取器右侧速度/奇偶校验的COM端口。
也许必须先为您正在阅读的条形码类型（Code 128，Code 39，Postal等）配置读卡器。 />
也许你还没有先进入连续扫描模式吗？
也许它正在阅读，但你没有正确得到它数据回来了。
非常感谢tlhintoq并对不起延迟回复
我已经确定你所提到的（速度/奇偶校验......）全部效果很好
对不起，我没有提到2d条码类型读得不错，但是条形码阅读器没有读取图像和阅读的问题电子图像我必须发送命令，我的意思是条形码阅读器没有响应阅读图像的命令（即使它没有启动光读或蜂鸣）
我已经与制造商通信，我等待回复
如果有任何建议非常感谢：）
我很遗憾地说我无法理解哪些部件运行良好而且运行不正常。
一切正常......扫描仪读得很好......看不太好......
即使它没有启动轻读或蜂鸣）
这些并不是大多数条形码阅读器接收命令的迹象。
A当扫描仪成功解码条形码时，会发出蜂鸣声，让您知道它已完成/成功。
扫描仪没有*尝试*表示它没有收到命令扫描。
希望制造商能够提供帮助。
I am working on write a program that reads and writes from the barcode
my problem when writing (send command to barcode)
I read in pdf manufacturer barcode that the command of capturing the image is IMGSNP so i pass it to write function as follows serialPortObj.write ("IMGSNP")
But Why does not have a barcode to respond to the command ? and did not capture the image :(
Is this wrong way
Barcode manufacturer is HandHeld (4800p)
Thanks for any help解决方案There could be a dozen different reasons - with so little information to go on.
Maybe you don''t have the COM port at the right Speed/Parity for the reader.
Maybe the reader has to be configured first for the type of barcode you are reading (Code 128, Code 39, Postal, etc.)
Maybe you haven''t put it into Continuous Scan mode first?
Maybe it is reading, but you aren''t correctly getting that data back.
Thank you very much tlhintoq and sorry for the delay in reply
I have ascertained what you referred to (Speed/Parity ...) All works well
Sorry, I did not mention that 2d barcode type reads well but the problem that barcode reader does not read the image and to read the image i have to send command ,i mean the barcode reader did not respond to the command of reading image (even it did not launch light reading or beebing)
I have corresponded with the manufacturer and I await a reply
if there are any suggestions Many Thanks :)
I''m sorry to say that I cannot understand what parts are working well and not working well.
All works well... Scanner reads well... does not read well...
even it did not launch light reading or beebing)These are not indications of receiving a command in most barcode readers.
A beep happens when the scanner is successful at decoding a barcode, to let you know it is done/successful.
That the scanner did not *try* indicates that it did not receive the command to scan.
Hopefully the manufacturer will be able to help.
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