AVR-Chat

Interfacing POS peripherals used to be my life.  In the early-mid 90's that
is all I did.  I do have some of the specifications for POS peripherals such
as IBM 468x, 469x, IBM 3680, NCR OCIA, and ICL/Datachecker Multidrop.

The Specification that I have for ICL is the Multidrop.  This was a RS422
I/F where one channel was the master and the other was a slave.  Basically
the Master (Cash register CPU) would send out commands on the Master
channel.  All devices(Scanner, Scale, Display, etc...) would respond on the
Slave channel.

The little bit of info I could find on this particular device points to an
RS232 I/F.  If that's the case then everything I know about ICL would be
meaningless.

When Fujitsu purchased ICL all access to their I/F specifications was
cutoff.  There is no such thing as a POSLAN that I know of.  I have been out
of the POS industry for a couple years but a few months ago I got back in.
With the proliferation of PC's and Windows there have been some attempts at
standardizing these types of communication.  Epson has been spearheading
OPOS with Microsoft http://pos.epson.com/pointofsale/opos.html as one major
attempt.

My suggestion is if this is an RS232 I/F more than likely if you figure out
the Baud rate you should be able to send ASCII chars and see them display.
What you won't know is any special commands such as Blink the cursor, Hide
the cursor, etc...

Hope this helps.

Thanks,
Dave Miller


> -----Original Message-----
> From: Alex Gibson [mailto:alxx@alxx.net]
> Sent: Thursday, January 29, 2004 5:50 PM
> To: AVR-Chat@yahoogroups.com
> Subject: [AVR-Chat] OT: Poslan protocol ?
> 
> 
> Does anyone know where I could find the specs for this
> protocol or get a copy.
> 
> allelectronics.com are selling a vfd display
> that was made for ICL.
> http://www.allelectronics.com/cgi-
> bin/category.cgi?category=search&item=VFD-202&type=store
> 
> Can get the display powered up and lighting all segments
> but thats about it.
> 
> Display has 64k ram
> 
> Been told it uses poslan protocol
> 
> Alex Gibson
> 
> 
> 
> 
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