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4800 baud rate communication in vb

I am doing a project using vb 6.0 to communicate a device . currently i am using 9600 baud rate N parity 1 stopbit .while iam using this i able to communicate the device .if i change the baud rate to 4800 i am unable to communicate the deice .

pls help to solve the issue

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  • stufftoy Jan 29, 2009

    Have HP laserjet 4p printer. Cannot print from window XP to printer. Need new printer? Situation fixable? How?

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You have to change it on both side!
If you are communicating your PC with a serial device, BOTH must have the same speed (serial device: 4800, pc: 4800)
Have you done it?

Most devices DEFAULT settings are 9600 baud rate, N, stopbit1.
But you can change it depending on the device...

Posted on Jan 04, 2009

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Posted on Jan 02, 2017

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Seems like you need to setup the communications protocol. You need to setup the type of communication that the device you are connected too if serial port then RS232 plus baud rate data bits parity etc.

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Baud Rate: 9600
Data Bits: 8
Parity: None
Stop Bit: 1
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I hope this helps.

Cindy Wells

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I have a Cipherlab scanner 8001, when i connect it to a linux computer, it doesnt download it gives me a Time out error, but when i connect a Cipher scanner 711 to the same COM port it works. Please advice...


OK,you indicated COM1 serial port is working on the a Cipher scanner 711.
Please check the communication setting on the Cipher scanner 711.
The most popular setting are
AUTO BAUD RATE
or
9600 bps 8 bits N for no parity check and 1 for check bit.
Short for as
9600 8 N 1
=====
Check the setting on the Cipher scanner 711 communication speed and make set the Cipherlab scanner 8001 to the same rate.
MAKE SURE YOU RE-BOOT the Cipherlab scanner 8001 before re-try.

Please keep me up to date on the fix via email.


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??? Assuming using serial port ???
Question marks are substituted for bad data.
Normal reason for this is incorrect Baud rate.

Test:
Power on printer while holding feed button.

Current settings including baud rate will be printed.
Press feed a second time to complete the test print.

Set port to setting specified by printout.

e.g.
(at command line)
mode com1:9600,N,8,1

mode port : baud , parity , data bits , stop bits

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The ^default command has been added to the EPL2 commands, starting in firmware version 4.39. This command will set the printer back to factory settings as long as the printer is in page mode. The command is not supported in line mode at this time. The command is case sensitive.
Syntax: ^default.
You can send the command to the printer via the parallel or serial port.
Parallel:
Open command prompt (DOS prompt) See windows instructions for details.
At the prompt type:
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Serial:
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1 Answer

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The mother board can be new enough to run at 19200 Baud rate or even more but most of the devices run at a baud rate of 9600. If the baud rate of the motherboard is increased then the communication between the device and the motherboard can become an issue.

If you still want to change the baud rate then the option will be available with the software you get with the device you are using with the serial port.

If I can know the device attached to the serial port then I can help you further.

Kindly Comment.

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