Does anyone knows if the rabbit BL2600(Wolf) controller can be
serially connected to a WeinTek M506T touchscreen?

Any webpages or web resources would be highly appreciated :)

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(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )

Thanks for your reply Nathan :)

I have been trying to get the M506T screens to communicate with the
BL2600 via MODBUS RTU protocol on a RS232 cable...but they seem to
dislike each other and refuse to talk :(

The M506T screen shows "PLC No Response" all the time even though I
had got the BL2600 setup with a BL2600 slave program, of which both
program and the library itself are official rabbit modbus v1.02
library and .c files. I believe the RS232 wiring between M506T and the
rabbit is good so it shouldn't be the problem.

Has anyone here had successfully get those two bad kids talking to
each other and care to shed some light on me? I have been trying to
get them talking for about a week but still no good :(
------------------------------------



(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )

I don't have any direct experience with these devices, but I have
dabbledd in Modbus.

Are you able to see packets received by the BL2600 via some type of
debugging, either dumping to stdio or in watches?

Have you tried using a Modbus Master simulator to talk to the BL2600,
or a Modbus Slave simulator to talk to the M506T? I use two programs
available for a modest price from www.modsoft.co.uk that I have used
that are pretty good. There are some free programs that I have had less
luck with.

Are you using a 3rd party lib for the Modbus or your own code?

Mark

--- In r...@yahoogroups.com, "drixz" wrote:
>
> Thanks for your reply Nathan :)
>
> I have been trying to get the M506T screens to communicate with the
> BL2600 via MODBUS RTU protocol on a RS232 cable...but they seem to
> dislike each other and refuse to talk :(
>
> The M506T screen shows "PLC No Response" all the time even though I
> had got the BL2600 setup with a BL2600 slave program, of which both
> program and the library itself are official rabbit modbus v1.02
> library and .c files. I believe the RS232 wiring between M506T and the
> rabbit is good so it shouldn't be the problem.
>
> Has anyone here had successfully get those two bad kids talking to
> each other and care to shed some light on me? I have been trying to
> get them talking for about a week but still no good :(
>

------------------------------------



(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )

Communications not working could be any number of reasons (cable, baud
rate, addressing etc). You should use some separate Modbus tests tools
to find out what's happening. I use Modbus Poll and Modbus Slave (from
http://www.modbustools.com/). They have paid for themselves many times
over though I think there is a trial period as well. You can use these
to independently test the screen and the BL2600 to pinpoint the problem.

Regards,

Nathan

-----Original Message-----
From: r...@yahoogroups.com [mailto:r...@yahoogroups.com]
On Behalf Of drixz
Sent: Friday, 18 July 2008 4:22 PM
To: r...@yahoogroups.com
Subject: [rabbit-semi] Re: Communication between Rabbit BL2600 with a
WeinTek M506T touchscreen

Thanks for your reply Nathan :)

I have been trying to get the M506T screens to communicate with the
BL2600 via MODBUS RTU protocol on a RS232 cable...but they seem to
dislike each other and refuse to talk :(

The M506T screen shows "PLC No Response" all the time even though I
had got the BL2600 setup with a BL2600 slave program, of which both
program and the library itself are official rabbit modbus v1.02
library and .c files. I believe the RS232 wiring between M506T and the
rabbit is good so it shouldn't be the problem.

Has anyone here had successfully get those two bad kids talking to
each other and care to shed some light on me? I have been trying to
get them talking for about a week but still no good :(



(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )

Thanks for the replies guys! :)

I have been using the Modbus master program(bundled with Rabbit's
MODBUS protocol module) to communicate with the BL2600 and it worked.
I'm also using a official rabbit modbus module library.

Will definitely give those modbus tools a try later. And again thanks
for the advices! :)
------------------------------------



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