Very low cost PLC with RS232
Very low cost PLC with RS232
(OP)
Is there a low cost controller that has an rs232 port with just a few i/o.
I have an application with a sick barcode reader. it has an
available rs232 port to send data to a pc. I would like to hook it to a cheap plc, send the data to the plc, decode the label data (up to four different labels) then turn on an output for the corresponding barcode. I don't want to
use a slc500 or s7 or have to spend a bunch of money on new software as well.
any input would be helpful
I have an application with a sick barcode reader. it has an
available rs232 port to send data to a pc. I would like to hook it to a cheap plc, send the data to the plc, decode the label data (up to four different labels) then turn on an output for the corresponding barcode. I don't want to
use a slc500 or s7 or have to spend a bunch of money on new software as well.
any input would be helpful





RE: Very low cost PLC with RS232
http://www.keyence.com/products/program/kv_300/kv_300.h...
Serial Interface Module
The KV-L2 has two ports - an RS-232C port and a switchable RS-232C/RS-422A port - for communications between PLCs or between a PLC and computer. You can easily control and read data from any external instrument with a compatible serial port.
A single computer running Keyence's Ladder Builder Software can communicate with multiple CPUs to edit programs and monitor operation or monitor a CPU while communicating with another computer.
And thanks to the built-in Display Interface Mode, you can easily connect a commercially available display unit to the CPU.
David Baird
mrbaird@hotmail.com
Sr Controls Engineer
EET degree.
Journeyman Electrician.
RE: Very low cost PLC with RS232
The most inexpensive PLC I have seen is Koyo. The web site is www.automationdirect.com
RE: Very low cost PLC with RS232
RE: Very low cost PLC with RS232
RE: Very low cost PLC with RS232
(like ATMEL or PIC)
<nbucska@pcperipherals.com>
RE: Very low cost PLC with RS232
Pete
RE: Very low cost PLC with RS232
RE: Very low cost PLC with RS232
Check out <www.bagotronix.com>-s DOS-Stamp: A 2"x2.6"
PC compatible ( no keybrd or display but easy to interface
to simpler ones) You can use any (GW-,Quick-,Power-,Turbo-)
BASIC, C or C++, PASCAL,FORTRAN whatever you can write and compile under DOS on your PC.
It is a serious computer for $139 ea, $99 in 100-s.
<nbucska@pcperipherals.com>
RE: Very low cost PLC with RS232
This would probably save you time, if not hardware dollars.
The programming for this project is not overly complicated, but it does go beyond the basic ladder logic kind of application.
If you're still looking at PLC's check the Aromat/Nais FP1 or FP0. They're relatively cheap, but suffer from the same kinds of problems that all Japanese PLC's have, meaning confusing software.
Good luck!
RE: Very low cost PLC with RS232
a positve match to two distinct barcodes, two shy of what we need. I have talked to Sick and there is no option for using anything else but a the communications port. I ended up using a basic stamp. worked out to be the cheapest route to go.
thanks for all the input.
RE: Very low cost PLC with RS232
Even cheaper is <www.jkmicro.com> (~ $69 )
<nbucska@pcperipherals.com>