Does anyone have experience with digital i/o products under QNX4.25 or RTP?
I need to add 96 digital i/o points to my controller and was wondering the
best method. PC bus card? Fieldbus based? Ethernet?
Vaughn Martin
Vaughn Martin wrote:
Does anyone have experience with digital i/o products under QNX4.25 or RTP?
I need to add 96 digital i/o points to my controller and was wondering the
best method. PC bus card?
A direckt IO card should be OK if the IO signals are very local distance
and it is ok for you to draw 96 wires to your PC 
Fieldbus based?
Would make sense if the IOs are distributed ans in a distange of range
of ~100 meters. The type of the fieldbus depends on the volume of your
data and the requested time resolution or response time.
A CAN master at frame level + appropriate IOs would be the cheapest
solution … if it fits to your requierements.
Ethernet?
Also possible. We are working just on the implementation of an EtherCAT
master. It is a ethernet (100Mb/s) based fieldbus with a ring topology
Scan time is less then 100 micro seconds … number of IO modules is
virtually unlimited (65k)
Prototype is allready working …
Regards
Armin Steinhoff
http://www.steinhoff-automation.com
PS: QNX4 and QNX6 are supported
Vaughn Martin
I have used RS485 distributed I/O many times and it works really well. Try
googling Nudam for more info. You will be able to get digital and analog I/O
as well as RS485 cards (ISA, PCI or external) which connect to a standard
RS232 port. You then only need to use standard QNS functions to access the
RS232 port
Ray
Armin Steinhoff <a-steinhoff@web.de> wrote in message
news:d3gf01$6kq$1@inn.qnx.com…
Vaughn Martin wrote:
Does anyone have experience with digital i/o products under QNX4.25 or
RTP?
I need to add 96 digital i/o points to my controller and was wondering
the
best method. PC bus card?A direckt IO card should be OK if the IO signals are very local distance
and it is ok for you to draw 96 wires to your PC >Fieldbus based?
Would make sense if the IOs are distributed ans in a distange of range
of ~100 meters. The type of the fieldbus depends on the volume of your
data and the requested time resolution or response time.A CAN master at frame level + appropriate IOs would be the cheapest
solution … if it fits to your requierements.Ethernet?
Also possible. We are working just on the implementation of an EtherCAT
master. It is a ethernet (100Mb/s) based fieldbus with a ring topology
Scan time is less then 100 micro seconds … number of IO modules is
virtually unlimited (65k)Prototype is allready working …
Regards
Armin Steinhoff
http://www.steinhoff-automation.com
PS: QNX4 and QNX6 are supported
Vaughn Martin
I have used PCI I/O cards from http://www.accesio.com in a industrial
process application without any problem.
Regads
Oscar E. Soto Hinojosa
Control Adaptable SA de CV
Tel:+ 52 (81) 8399-0180
Fax:+ 52 (81) 8399-0162
Cel: +52 (81) 8396-6327
“Vaughn Martin” <vhmartin@vamcointernational.com> escribió en el mensaje
news:d3gdru$5v4$3@inn.qnx.com…
Does anyone have experience with digital i/o products under QNX4.25 or
RTP?
I need to add 96 digital i/o points to my controller and was wondering the
best method. PC bus card? Fieldbus based? Ethernet?Vaughn Martin